Eliminator 125 (2000) - Motorcycle MITSUBISHI - Free user manual and instructions
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| Product Type | Motorcycle |
| Brand | Mitsubishi |
| Model | Eliminator 125 |
| Year | 2000 |
| Overall Length | 2150 mm (84.6 in) |
| Overall Width | 780 mm (30.7 in) |
| Overall Height | 1020 mm (40.2 in) |
| Wheelbase | 1470 mm (57.9 in) |
| Seat Height | 680 mm (26.8 in) |
| Ground Clearance | 145 mm (5.7 in) |
| Dry Weight | 128 kg (282 lb) |
| Fuel Tank Capacity | 13 L (3.43 US gal) |
| Engine Type | 4-stroke, SOHC, single-cylinder, air-cooled |
| Displacement | 124 cm³ (7.6 cu in) |
| Bore x Stroke | 55 x 52.4 mm |
| Compression Ratio | 9.6:1 |
| Maximum Power | 8.8 kW (12 PS) @ 9500 rpm |
| Maximum Torque | 9.7 N·m (7.2 ft·lb) @ 8000 rpm |
| Carburetor | Mikuni BS28 |
| Ignition System | DC-CDI |
| Starting System | Electric |
| Transmission | 5-speed, constant mesh |
| Final Drive | Chain |
| Front Suspension | Telescopic fork, 130 mm travel |
| Rear Suspension | Swingarm, 60 mm travel |
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USER MANUAL Eliminator 125 (2000) MITSUBISHI
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Side profile of a black Kawasaki motorcycle with visible engine and wheelbars (no text or symbols)Motorcycle ServiceManual
QuickReferenceGuide
| GeneralInformation1 | |
| PeriodicMaintenance2 | |
| FuelSystem3 | |
| EngineTopEnd4 | |
| Clutch5 | |
| EngineLubricationSystem | 6 |
| EngineRemoval/Installation | 7 |
| Crankshaft/Transmission | 8 |
| Wheels/Tires | 9 |
| FinalDrive | 10 |
| Brakes | 11 |
| Suspension | 12 |
| Steering | 13 |
| Frame | 14 |
| ElectricalSystem | 15 |
| Appendix | 16 |
This quick reference guidewill assist you in locating adesired topic or procedure.
- Bendthepagesbacktomatchthe blacktabofthedesiredchapternumberwiththeblacktabontheedgeateachtableofcontentspage.
•Refertothesectionaltableofcontents fortheexactpagestolocatethespecifictopicrequired.
Motorcycle ServiceManual
Allrightsreserved.Nopartsofthispublicationmaybereproduced,storedinaretrievalsystem,or transmittedinanyformorbyanymeans,electronicmechanicalphotocopying,recordingorotherwise, withoutthepriorwrittenpermissionofQualityDivision/ConsumerProducts&MachineryCompany/Kawasaki HeavyIndustries,Ltd.,Japan.
Noliability can be accepted for any inaccuracies or missions in this publication, although every possible care has been taken to make it as complete and accurate as possible.
The right is reserved to make changes at any time without prior notice and without incurring an obligation to make such changestoproducts manufactured previously. See your Motorcycle dealer forthelatest information on product improvements incorporated after this publication.
All information contained in this publication is based on the latest product information available at the time of publication. Illustrationsandphotographsinthispublicationareintendedforreferenceuseonlyandmay notdepictactualmodelcomponentparts.
LISTOFABBREVIATIONS
| Aampere(s) | lbpound(s) | ||
| ABDCafter | bottomdeadcenter | m | meter(s) |
| AC | alternatingcurrentmin | minute(s) | |
| ATDcafter | topdeadcenter | N | newton(s) |
| BBDCbefore | bottomdeadcenterPapascal(s) | ||
| BDCbottom | deadcenterPShorsepower | ||
| BTDC | before top dead center | psi | pound(s) per square inch |
| °C | degree(s) Celsius | r | revolution |
| DC | direct current | rpm | revolution(s) per minute |
| F | farad(s) | TDC | top dead center |
| °F | degree(s) Fahrenheit | TIR | total indicator reading |
| ft | foot, feet | V | volt(s) |
| g | gram(s) | W | watt(s) |
| h | hour(s) | Ω | ohm(s) |
| L | liter(s) |
Read OWNER'S MANUAL before operating.
EMISSIONCONTROLINFORMATION
Toprotecttheenvironmentinwhichwealllive,Kawasakihasincorporatedcrankcaseemission(1)andexhaustemission(2)controlsystemsincompliancewithapplicableregulationsof theUnitedStatesEnvironmentalProtectionAgencyandCaliforniaAirResourcesBoard.Additionally,Kawasakihasincorporatedanevaporativeemissioncontrolsystem(3)incompliance withapplicableregulationsoftheCaliforniaAirResourcesBoardonvehiclessoldinCalifornia only.
1. CrankcaseEmissionControlSystem
This system eliminates the lease of crank case vapors into the atmosphere. Instead, the vapors are routed through an oil separator to the inlet side of the engine. While the engine is operating, the vapors are drawn into combustion chamber, where they are burned along with the fuel and air supplied by the carburetionsystem.
2. ExhaustEmissionControlSystem
This system reduces the amount of pollutants discharged into the atmosphere by the exhaust of this motorcycle. The fuel, ignition, and exhaust system so this motorcycle have been carefully designed and constructed to ensure an efficient engine with low exhaust pollutants levels.
TheexhaustsystemofthismodelmotorcyclemanufacturedprimarilyforsaleinCaliforniain-cludesacatalyticconvertersystem.
3. Evaporative Emission Control System
Vaporscausedbyfuelevaporationinthefuelsystemarenotventedintotheatmosphere.Instead,fuelvaporsareroutedintotherunningenginetobeburned,orstoredinacanisterwhen theengineisstopped.Liquidfueliscaughtbyavaporseparatorandreturnedtothefueltank.
TheCleanAirAct, which is the Federal law covering motor vehicle pollution, contains what is commonly referred to the Act's "tampering provisions."
"Sec.203(a)Thefollowingactsandthecausingthereofareprohibited...
(3)(A)foranypersontoremoveorrenderinoperativeanydeviceorelementofdesigninstalled onorinamotorvehicleormotorvehicleengineincompliancewithregulationsunderthis titlepriortoitssaleanddeliverytotheultimatepurchaser,orforanymanufacturerordealer knowinglytoremoveorrenderinoperativeanysuchdeviceorelementofdesignaftersuch saleanddeliverytotheultimatepurchaser.
(3)(B)foranypersonengagedinthebusinessofrepairing,servicing,selling,leasing,ortrading motorvehiclesormotorvehicleengines,orwhooperatesafleetofmotorvehiclesknowinglytoremoveorrenderinoperativeanydeviceorelementofdesigninstalleddonorina motorvehicleormotorvehicleengineincompliancewithregulationsunderthistitlefollowingitssaleanddeliverytotheultimatepurchaser..."
NOTE
○ The phrase "remove or render inoperative any device or element of design" has been generally interpreted as follows:
- Tamperingdoesnotincludethetemporaryremovalorrenderinginoperativeofdevicesorelementsofdesigninordertoperformmaintenance.
- Tamperingcouldinclude:
a. Maladjustmentofvehiclecomponentssuchthattheemissionstandardsareexceeded.
b. Use of replacement parts or accessories which adversely affect the performance ordurability of the motorcycle.
c.Additionofcomponentsoraccessoriesthatresultinthevehicleexceedingthestandards.
d. Permanently removing, disconnecting, or rendering in operative any component or element of design of the emission control systems.
WERECOMMENDTHATALLDEALERSOBSERVETHESEPROVISIONSOFFEDERALLAW, THEVIOLATIONOFWHICHISPUNISHABLEBYCIVILPENALTIESNOTEXCEEDING \$10,000PERVIOLATION.
TAMPERINGWITHNOISECONTROLSYSTEMPROHIBITED
Federallawprohibitsthefollowingactsorthecausingthereof:(1)Theremovalorrendering inoperativebyanypersonotherthanforpurposesofmaintenance,repair,orreplacement,ofany deviceorelementofdesignincorporatedintoanynewvehicleforthepurposeofnoisecontrol priortoitssaleordeliverytotheultimatepurchaserorwhileitisinuse,or(2)theuseofthe vehicleaftersuchdeviceorelementofdesignhasbeenremovedorrenderedinoperativeby anyperson.
Amongthoseactspresumedtoconstitutetamperingaretheactslistedbelow:
- Replacementoftheoriginalexhaustsystemormufflerwithaccomponentnotincompliance withFederalregulations.
- Removalofthemuffler(s)oranyinternalportionofthemuffler(s).
- Removaloftheairboxorairboxcover.
- Modificationstothemuffler(s)orairinletsystembycutting,drilling,orothermeansifsuch modificationsresultinincreasednoiselevels.
Foreword
Thismanualisdesignedprimarilyforuseby trainedmechanicsinaproperlyequippedshop. However, it contains enough detail and basic information to make useful to the owner who desire to perform his own basic maintenance and repair work. Abasicknowledge of mechanics, the proper use of tools, and workshop procedures must be understood in order to carry out maintenance and repairs satisfactorily. Whenever the owner has insufficient experience or doubt this ability to do the work, all adjustments, maintenance, and repair should be carried out only by qualified mechanics.
Inordertoperformtheworkefficiently and toavoidcostlymistakes,readthetext,thoroughlyfamiliarizeyourselfwiththeprocedures beforestartingwork,andthendotheworkcarefullyinacleanarea.WhenIVERSpecialtoolsorequipmentarespecified,donotusemakeshift toolsorequipment.Precisionmeasurements canonlybemadeiftheproperinstrumentsare used,andtheuseofsubstitutetoolsmayadverselyaffectsafeoperation.
Forthedurationofthewarrantyperiod, werecommendthatallrepairsandscheduled maintenancebeperformedinaccordancewith thisservicemanual.Anyownermaintenanceor repair procedure not performed in accordance withthismanualmayvoidthewarranty. Togetthelongestlifeoutofyourvehicle:
- FollowthePeriodicMaintenanceChartintheServiceManual.
- Be alert for problems and non-scheduled maintenance.
- UsepropertoolsandgenuineKawasakiMotorcycleparts. Specialtools, gauges, and testersthatarenecessarywhen servicing Kawasakimotorcyclesareintroduced by the Service Manual. Genuine parts provided as sparepartsarelistedinthePartsCatalog.
- Follow the procedures in this manual carefully. Don't take shortcuts.
- Remembertokeepcompleterecordsof maintenanceandrepairwithdatesandanynew partsinstalled.
HowtoUseThisManual
In this manual, the product is divided into its majors systems and the these systems makeup them an ual's chapters. The Quick Reference
Guideshowsyoualloftheproduct'ssystem andassistsinlocatingtheirchapters. Each chapterinturnhasitsowncomprehensiveTableofContents.
Forexample, if you want ignition coil information, use the Quick Reference Guide to locate the Electrical System chapter. Then, use the Table of Contents on the first page of the chapter to find the Ignition Coil section.
Whenever you see these WARNING and CAUTION symbols, heed their instructions! Always follows safe operating and maintenance practices.
WARNING
This warningsymbolidentifiesspecial instructionsorprocedureswhich,ifnot correctlyfollowed,couldresultinpersonalinjuryorlossoflife.
CAUTION
Thiscautionsymbolidentifiesspecial instructionsorprocedureswhich,ifnot strictlyobserved,couldresultindam- agetoordestructionofequipment.
This manual contains four more symbols (in addition to WARNING and CAUTION) which will help you distinguish different types of information.
NOTE
○This note symbol indicates points of particular interest form more efficient and convenient operation.
- Indicatesaproceduralsteporworktobe done.
○Indicatesaproceduralsub-steporhowtodo the work of the procedural step it follows. It alsoprecedesthetextofaNOTE.
★Indicates a conditional step or what action to take based on the result of the test or inspection in the procedural step or sub-step it follows.
In most chapters an exploded view illustration of the system components follow the Table of Contents. In these illustrations you will find the instructions indicating which parts require specified tightening torque, oil, grease or a locking agent during assembly.
GeneralInformation
TableofContents
Before Servicing 1-2
Model Identification.... 1-7
General Specifications.... 1-9
Technical Information-DC-CDI (Direct Current-Capacitor Discharge Ignition System).... 1-13
Technical Information-Coasting Enricher 1-20
Unit Conversion Table 1-22
1-2GENERALINFORMATION
BeforeServicing
Beforestartingtopermaninspectionserviceorcarryoutadisassemblyandreassemblyoperation on a motorcycle, read the precautions given below. To facilitate actual operations, notes, illustrations, photographs, cautions, and detailed descriptions have been included in each chapter wherever necessary. This section explains the items that require particular attention during the removal and reinstallationordisassemblyandreassemblyofgeneralparts.
Especiallynotethefollowing:
BatteryGround
Beforecompletinganyserviceonthemotorcycle, disconnectthebatterycablesfromthebatterytopreventtheenginefromaccidentallyturningover.Disconnecttheground cable(−)firstandthenthepositive(+).Whencompleted withtheservice,firstconnectthepositive(+)cabletothe positive(+)terminalofthebatterythenthenegative(−)cabletothenegativeterminal.
EdgesofParts
Liftlargeorheavypartswearingglovestopreventinjury frompossiblesharpedgesontheparts.
Solvent
Useahighflushpointsolventwhencleaningparts.High flushpointsolventshouldbeusedaccordingtodirections ofthesolventmanufacturer.
Cleaningvehiclebeforedisassembly
Cleanthevehiclethoroughlybeforedisassembly.Dirtor otherforeignmaterialsenteringintosealedareasduringvehicledisassemblycancauseexcessivewearanddecrease performanceofthevehicle.


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Illustration of a hand holding a cylindrical engine block with a no-handled hand symbol nearby (no text or labels)
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Illustration of a solvent tray with a flame and three small objects inside, no text or symbols present.
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Line drawing of a motorcycle with hands adjusting the wheel (no text or symbols)BeforeServicing
ArrangementandCleaningofRemovedParts
Disassembledpartsareeasytoconfuse.Arrangethe partsaccordingtotheorderthepartsweredisassembled andcleanthepartsinorderpriortoassembly.
StorageofRemovedParts
After all the parts including subassembly part have been cleaned, store the parts in a clean area. Put a clean cloth or plastics sheet over the part stop protect from any foreign material that may collect before assembly.
Inspection
Reuseofwornordamagedpartsmayleadtoseriousaccident. Visuallyinspectremovedpartsforcorrosion,discoloration,orotherdamage. Refertotheappropriatesections ofthismanualforservicelimitsonindividualparts. Replace thepartsifanydamagehasbeenfoundorifthepartisbeyonditsservicelimit.
ReplacementParts
ReplacementpartsmustbeKAWASAKIgenuineor recommendedbyKAWASAKI.Gaskets,O-rings,oilseals, greaseseals,circlipsorcotterpinsmustbereplacedwith newoneswheneverdisassembled.
AssemblyOrder
Inmostcasesassemblyorderisthereverseofdisassembly,however,ifassemblyorderisprovidedinthisService Manual,followtheproceduresgiven.

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Technical line drawing of a mechanical assembly with gears and components (no text or symbols)
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Technical line drawing of a mechanical assembly with gears and components (no text or symbols)
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Line drawing of a hand holding a small container with a small inset showing an eye (no text or symbols)

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Line drawing of hands operating a mechanical device with gears and a handle (no text or symbols)BeforeServicing
TighteningSequence
Generally, when installing apart with several bolts, nuts, or screws, start them all in their holes and tight them to as nugfit. Thentight them according to the specified sequence to prevent casewar page or deformation which can lead to malfunction. Conversely when loosening the bolts, nuts, or screws, first loosen allof them by about a quarter turn and then removethem. If these specified tightening sequence is not indicated, tight the fasteners alternating diagonally.
Tightening Torque
Incorrect torque applied to a bolt, nut, or screw may lead to serious damage. Tighten fastener stothespecified torque using a good quality torque wrench. Often, the tightening sequence is followed twice - initial tightening and final tightening with torque wrench.
Force
Usecommonsenseduringdisassemblyandassembly, excessive force can cause expensive or hard to repair damage. Whennecessary,removescrewsthathaveanon-permanentlockingagentappliedusinganimpactdriver. Useaplastic-facedmalletwhenevertappingisnecessary.
Gasket, O-ring
Hardening, shrinkage, or damage of both gaskets and O-ringsafterdisassembly can reduce sealing performance. Remove old gaskets and clean these sealing surfaces thoroughly so that nogasket material or other material remains. Install new gaskets and replace used O-rings when re-assembling.
LiquidGasket,LockingAgent
For application that require Liquid Gasketora Locking agent, clean the surfaces so that no oil residue remains before applying liquid gasketor locking agent. Donot apply them excessively. Excessive application can clog oil passages and causes serious damage.


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Line drawing of hands using a tool to measure a cylindrical object, no text or symbols present
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Line drawing of a mechanical component being adjusted by a hand (no text or symbols)
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Line drawing of two hands adjusting flange components with a sun symbol above (no text or symbols)
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Illustration of a hand using a tool to connect components in a mechanical housing, with a no-smoking symbol nearby (no text or labels)BeforeServicing
Press
Foritemssuchasbearingsoroilsealsthatmustbe pressedintoplace,applysmallamountofoiltothecontactarea.Besuretomaintainproperalignmentanduse smoothmovementswheninstalling.
BallBearingandNeedleBearing
Donotremovepressedballorneedleunlessremovalis absolutelynecessary.Replacewithnewoneswhenever removed.Pressbearingswiththemanufacturerandsize marksfacingout.Pressthebearingintoplacebyputting pressureonthecorrectbearingraceasshown.
Pressingtheincorrectracecancausepressurebetween theinnerandouterraceandresultinbearingdamage.
OilSeal, GreaseSeal
Donotremovepressedoilorgreasesealsunlessremoval isnecessary.Replacewithnewoneswheneverremoved. Pressnewoilsealswithmanufactureandsizemarksfacing out.Makesurethesealisalignedproperlywheninstalling.
Applyspecifiedgreasetothelipofsealbeforeinstalling theseal.
Circlips, CotterPins
Replacecirclipsorcotterpinsthatwereremovedwithnew ones. Takecarenottoopentheclipexcessivelywheninstallingtopreventdeformation.

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Mechanical assembly diagram showing hands assembling a mechanical component with a tool and a labeled block (no text or symbols on the diagram itself)
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Mechanical assembly diagram showing two mechanical components with downward force arrows, one bearing a circular component (no text or symbols)


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Technical illustration of a mechanical tool interacting with a workpiece, showing motion and assembly (no text or symbols)1-6GENERALINFORMATION
BeforeServicing
Lubrication
It is important to lubricator rotating or sliding parts during assembly to minimize weard during initial operation. Lubrication points are called out throughout this manual, apply the specific oilorgrease as specified.
DirectionofEngineRotation
Whenrotatingthecrankshaftbyhand, thefreeplay amountofrotatingdirectionwillaffecttheadjustment. Rotatethecrankshafttopositivedirection(clockwiseviewed fromoutputside).
ElectricalLeads
Atwo-colorleadisidentifiedfirstbytheprimarycolorand thenthestripecolor.Unlessinstructedotherwise,electrical leadsmustbeconnectedtothoseofthesamecolor.
Instrument
Useameterthathasenoughaccuracyforanaccurate measurement.Readthemanufacture'sinstructionsthor- oughlybeforeusingthemeter.Incorrectvaluesmaylead toimproperadjustments.

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Line drawing of hands assembling a tire with a tool labeled 'OIL' (no text or symbols beyond label)
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Technical line drawing of a mechanical component with no visible text or symbols

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Line drawing of a hand using a multimeter to test electrical components (no text or symbols visible)ModelIdentification
BN125-A1(Europe)LeftSideView

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Side profile of a black Kawasaki motorcycle with visible engine and wheels (no text or symbols)BN125-A1(Europe)RightSideView

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Side profile of a black Kawasaki motorcycle with visible engine and wheel (no text or symbols)1-8GENERALINFORMATION
ModelIdentification
BN125-A1(Singapore)LeftSideView

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Side profile of a black Kawasaki motorcycle with visible engine and wheel (no text or symbols)BN125-A1(Singapore)RightSideView

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Side profile of a black Kawasaki motorcycle with visible engine, power lines, and wheelbase (no text or symbols)GeneralSpecifications
| Items | BN125-A1 ~ A2 | BN125-A3 ~ A4 | BN125-A5 ~ |
| Dimensions | |||
| Overalllength2150mm(84.6in.) | |||
| Overallwidth780mm(30.7in.) | |||
| Overallheight1020mm(40.2in.) | 1035mm(40.8in.) | ←1050mm(41.3in.)(US,CA)1045mm(41.1in.)BN125-A7~ (N,NU) | |
| Wheelbase1470mm(57.9in.) | |||
| Roadclearance | 145mm(5.7in.)160mm(6.3in.) | ←155mm(6.1in.)(US,CA) | |
| Seatheight680mm(26.8in.) | |||
| Drymass | 128kg(1255N,282lb) | 135kg(1323N,298lb)132kg(1294N,291lb)(US):(BN125-A4~) | |
| Curbmass:Front64kg(628N,141lb)← | 66kg(647N,146lb)(CAL)65kg(637N,143lb)(BN125-A7~,N,NU) | ||
| Rear: | 80 kg (785 N, 176 lb) | 84 kg (824 N, 185 lb)81kg(794N,179lb):(BN125-A4, US,CA) | ←←82kg(804N,181lb)(CAL)83kg(814N,183lb)(BN125-A7~,N,NU) |
| Fueltankcapacity | 13L(3.43USgal) | ||
| Performance | |||
| Minimumturningradius | 2.5m(8.2ft.) | ||
| Engine | |||
| Type | 4-stroke,SOHC,1-cylinder | ||
| Coolingsystem | Air-cooled | ||
| Boreandstroke | 55×52.4mm(2.2×2.1in.) | ||
| Displacement | 124cm3(7.6cuin.) | ||
| Compressionratio | 9.6: 1 | ||
| Maximumhorsepower | 8.8kW(12PS)@9500r/min(rpm),(US)- | ←8.5kW(11.6PS)@9500r/min(rpm)(BN125-A7~,N,NU) | |
GeneralSpecifications
| Items | BN125-A1 ~ A2 | BN125-A3 ~ A4 | BN125-A5 ~ |
| Maximum torque 9.7N·m(0.99kgf·m,7.2ft·lb)@8000r/min(rpm)(US)- | ←9.8N·m(1.00kgf·m,7.2ft·lb)@8000r/min(rpm)(BN125-A7~,N,NU) | ||
| Carburetionsystem CarburetorStartingsystemIgnition systemTiming advanceIgnition timing From 10° BTDC | ,MIKUNIBS28Electric starterDC-CDIElectronically advanced (analog) | ||
| @1300r/min(rpm)to30° BTDC@4500r/min(rpm) | ←From 10° BTDC@1300r/min(rpm) to35° BTDC@4500r/min(rpm)(US,CA,CAL) | ||
| Spark plug NGKCR7E | ← | NGKCR7EorU22ESR-N:(BN125-A4~, US, CA) | |
| Valvetiming:Inlet:OpenCloseDurationExhaust:OpenCloseDurationLubricationsystemEngine oil:Grade | 23° BTDC57° ABDC260°64° BBDC16° ATDC260°Forcedlubrication(wetsump) | ||
| SE, SF or SG | ←(BN125-A3)APISE,SForSGAPISH,SJorSLwithJASOMA | ||
| ViscosityCapacity | SAE10W-40 | ||
| 1.4L(1.48USqt)(whenengine is completely dry) | |||
| Drive TrainPrimary reduction system:TypeReduction ratioClutch typeTransmission:Type | Gear3.666(77/21)Wetmultidisc5-speed,constantmesh,returnshift | ||
GeneralSpecifications
| Items | BN125-A1 ~ A2 | BN125-A3 ~ A4 | BN125-A5 ~ |
| Gear ratios: | |||
| 1st | 2.700(27/10) | ||
| 2nd | 1.705(29/17) | ||
| 3rd1.300(26/20) | |||
| 4th1.090(24/22) | |||
| 5th0.952(20/21) | |||
| Finaldrivesystem: | |||
| TypeChaindrive | |||
| Reduction ratio 3.066(46/15) | ← | 2.800(42/15)(BN125-A7~, N, NU) | |
| Overall drive ratio | 10.708 @Top gear | ←9.778@Topgear(BN125-A7~, N, NU) | |
| Frame | |||
| Type | Doublecradle | ||
| Caster(rake angle) | 34° | ||
| Trail | 121 mm(4.8in.) | ←119 mm (4.7 in.): BN125-A4 ~ (US, CA) | |
| RimSize: | |||
| Front | 17×1.85 | ||
| Rear | 15×2.75 | ||
| Fronttire: | |||
| TypeTubetype | |||
| Size | 90/90-17 M/C49P | ||
| Reartire: | |||
| TypeTubetype | |||
| Size | 130/90-15 M/C66P | ||
| Frontsuspension: | |||
| TypeTelescopic fork | |||
| Wheel travel | 130 mm (5.1 in.) | 140 mm (5.5 in.) | |
| Rearsuspension: | |||
| TypeSwingam | |||
| Wheel travel | 60 mm (2.4 in.) | 80 mm (3.1 in.) | |
| 75mm (3.0in.) | |||
| (BN125-A2~) | |||
| Braketype: | |||
| Front | Singledisc | ||
| Rear | Drum | ||
| Electrical Equipment | |||
| Battery | 12V9Ah | ||
| Headlight: | |||
| TypeSemi-sealed beam | |||
| Bulb | 12V60/55W | ||
1-12GENERALINFORMATION
GeneralSpecifications
| Items | BN125-A1 ~ A2 | BN125-A3 ~ A4 | BN125-A5 ~ |
| Trail/brakelight12V5/21WAlternator:TypeRatedoutput | Single-phaseAC8.75A/12V@4000r/min(rpm):BN125-A115A/14V@8000r/min(rpm):BN125-A2~ | ||
Specificationssubjecttochangewithoutnotice, and may not apply to every country.
(CA):CanadaModel
(US):UnitedStatesModel
(N): No Catalytic Converter
(NU): No Catalytic Converter (United Kingdom Model)
TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)
Description
○ UnliketheconventionalCDI, the DC-CDlusesabatteryinsteadofamagnetoasapowersource.
The DC-CDI powered by a battery generates strong ignitions parkeven at low engines speeds. The conventional CDI, which uses AC voltages supplied by an exciter coil, generates less ignition spark at low engines speeds.
The DC-CDI has been built-in DC-DC converter which changes battery voltage or battery-changing voltage into high voltage AC. Even if the battery loses its charge, the DC-CDI can use battery-charging voltage.
TheDC-CDI doesn't have an exciter coil, a power consumer, therefore the battery is charged better.
IgnitionSystem
TheDC-CDisconnectedasshown.

flowchart
graph TD
A["Alternator"] --> B["Regulator/Rectifier"]
B --> C["Ignition Switch"]
C --> D["CDI unit"]
D --> E["Ignition Coil"]
E --> F["Spark Plug"]
F --> G["Battery"]
G --> H["Crank-shaft Sensor"]
H --> B
B --> I["Voltage is detected"]
I --> J["Engine Stop Switch"]

flowchart
graph TD
A["Alternator"] --> B["Regulator/Rectifier"]
B --> C["Ignition Switch"]
C --> D["CDI unit"]
D --> E["Ignition Coil"]
E --> F["Spark Plug"]
F --> G["Battery"]
G --> H["Crank-shaft Sensor"]
B --> I["Voltage is detected"]
D --> J["Engine Stop Switch"]
1-14GENERALINFORMATION
TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)
Operation
TheDC-CDIcircuitconsistsofabattery,aDC-DCconverter,adiode,acapacitor,anignitiontiming controller, a crankshaft sensor, a thyristor, an ignition coil, a spark plug, an ignition switch, and an enginestopswitch.IftheignitionswitchortheenginestopswitchisturnedtotheOFFposition,the batterypowersupplyiscutoff,andnosparkisgenerated.
TheDC-DCconverterintheCDlunithasabuilt-intransformer,whichchanges12Vbatteryvoltageorbattery-chargingvoltageintoACvoltage.ThediodeconvertstheACvoltageintoabout225VDCtochargethecapacitor.
Firststep-ChargingtheCapacitor
Theconvertergeneratesthecurrenttochargethecapacitorthroughthediodewith225VDC.During thisprocess,thecurrentchangesslowlythroughtheprimarycoilwindingsothatthesecondarycoil windinggoesnotproduceenoughvoltagetofirethesparkplug.

flowchart
graph TD
A["Battery"] --> B["Transformer"]
B --> C["12V DC"]
C --> D["225V DC"]
D --> E["Capacitor (+)"]
E --> F["Ignition Coil (-)"]
F --> G["Charging"]
G --> H["Crankshaft Sensor"]
H --> I["Ignition Timing Controller"]
I --> J["Thyristor"]
J --> K["A"]
K --> L["K"]
L --> M["G"]
M --> N["Spark Plug"]
style A fill:#f9f,stroke:#333
style B fill:#ccf,stroke:#333
style C fill:#cfc,stroke:#333
style D fill:#fcc,stroke:#333
style E fill:#cff,stroke:#333
style F fill:#ffc,stroke:#333
style G fill:#cfc,stroke:#333
style H fill:#fcc,stroke:#333
style I fill:#cfc,stroke:#333
style J fill:#fcc,stroke:#333
style K fill:#cfc,stroke:#333
style L fill:#fcc,stroke:#333
style M fill:#cfc,stroke:#333
style N fill:#fcc,stroke:#333
style_O["DC-DC Converter"] --> P["Oscillator"]
P --> Q["Thyristor"]
Q --> R["Ignition Timing Controller"]
R --> S["Crankshaft Sensor"]
S --> T["Spark Plug"]
Secondstep-thyristorconducts
Aftercharging, the crankshaft sensor and ignition timing controllers send at triggers signal to the gate through the cathode (K → G in the figure) in the thyristor. When this happens, the current flows from the cathodeto the anode (K → A) in the thyristor.
Thirdstep-SurgingcurrentintothePrimaryWinding
Whenthethyristorconducts, the chargestored in the capacitor is released suddenly, flowing through the primary winding, backthrough the ethyristortothecapacitor.
TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)

flowchart
graph TD
Battery --> DC-DC_Converter["DC-DC Converter"]
DC-DC_Converter --> Transformer["Transformer 12V DC → 225V DC"]
Transformer --> Oscillator["Oscillator"]
Oscillator --> Thyristor["Thyristor"]
Thyristor --> IgnitionTiming["Ignition Timing Controller"]
IgnitionTiming --> Crankshaft["Crankshaft Sensor"]
Crankshaft --> Capacitor["Capacitor (+)"]
Capacitor --> IgnitionCoil["Ignition Coil (-)"]
IgnitionCoil --> Discharging["Discharging"]
Discharging --> PrimaryWinding["Primary Winding"]
PrimaryWinding --> SparkPlug["Spark Plug"]
SparkPlug --> SecondaryWinding["Secondary Winding"]
SecondaryWinding --> Drone["Drone"]
Drone --> SparkPlug
Battery --> Battery
DC-DC_Converter --> Battery
style DC-DC_Converter fill:#f9f,stroke:#333
style Battery fill:#ccf,stroke:#333
style DC-DC_Converter fill:#cfc,stroke:#333
style Transformer fill:#fcc,stroke:#333
style Battery fill:#ffc,stroke:#333
style Crankshaft fill:#cfc,stroke:#333
style PrimaryWinding fill:#fcc,stroke:#333
style SparkPlug fill:#ffc,stroke:#333
style SecondaryWinding fill:#fcc,stroke:#333
This sudden change in the primary current induces a primary voltage (counterelectromotive force) which is equal to the capacitor voltage (about 225V) but against the discharging current. The primary voltage induces a high secondary voltage in the secondary coil, generating spark plug gap. The secondary voltage multiplied by winding ratio (about 90:1) reaches about 20000V.
Finalstep-Thyristorresets
After the charge stored in the capacitor is completely released, the cathodeoanode voltage is removed in the thyroid or and the thyroid receptor stops conducting and automatically resets. Then, the DC-DC converter charges the capacitor again and operation return to first step.
The control of Ignition Timing
Sincetheignitiontimingiselectronicallyadvancedorretarded, thissystemhasnomechanicalpartssuchasacam orcontactbreakersandtherearenopartstowearoutand noperiodicmaintenanceisrequired. So, thereisneverany needtoadjustthetimingonceithasbeeninstalledcorrectly.
Generally, the spark plug must be fired at a proper crank angle before top dead center (BTDC).
Atlowandmid-rangeenginespeeds, thefastertheengine runs, thefurthertheignitionTimingadvances. This preventsknocking and preignition, and providesbetterengine performance.
Iftheenginespeedincreasesfurther,notimingadvance isrequiredbecausetheenginecanbreatheinandburnthe fuel/airmixtureinashortertime.Theignitiontimingdoes notincreasefurtherandthetimingadvancestops.This alsoprovidesbetterengineperformanceandpreventsthe enginefromoverrunningandoverheating.
Theoperationofadiodeandthyristorisexplainedhere inordertodescribehowtheignitiontimingiscontrolled.

line
| Time (deg) | Ignition Timing (deg. BTDC) | |---|---| | low-middle speed | idling | | high speed | |1-16GENERALINFORMATION
TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)
Diode
Adiodefunctionsasanelectricalcheckvalve.Itconducts currenteasilyfromitscathodetoitsanode,butitwillnot permitcurrentflowintheoppositedirection.Sinceelectricityattemptstoflowfromnegative(−)topositive(+),acircuitwithadonewillconductcurrentonlywhenthepolarity iscorrect,i.e.,whenthenegativechargeisappliedtothe diode'scathode.
NOTE
○ Thismanual doesn't usethe conventional current flow concept, but the electron theory current flow concept; currentissupposed to flownegative(−)topositive(+) in thistext.


Thyristor(SCR)
Currentwillflowfromthecathodetoanodebutwillnot flowinthereversedirection. Thethyristordiffersfroma diodeintworespects:(a)eventhoughavoltageofthecorrectpolarity-negativetocathode-maybeapplied,thethyristorwillnotconductuntilasignalisappliedtothegateinput lead;(b)oncestarted,itwillnotstopconducting(evenifthe gateleadsignalvoltagestops)untilthecathodetoanode voltageisremovedorreversed.

Thecrankshaftsensorisinstalledonthealternatorcover sothatitwillbeclosetothealternatorrotor. Onesideof thecrankshaftsensorcorehasapermanentmagnetand theothersidehasacoiltosignaltheCDlunit.
CrankshaftSensor[A]
AlternatorRotor[B]
TimingPlate[C]
OutputVoltage[D]

TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)
Everytimeeitherendofthetimingplateontherotor passesbythecrankshaftsensor,apulseisgeneratedand senttotheCDIunit,thatis,twopulsesaregeneratedper onerevolutionoftherotor.Oneisapositivepulse[A]and theotherisanegativepulse[B].

Thecrankshaftsensor,asignalgenerator,andvoltagecomparatorsdeterminetheignitiontimingintheignitiontimingcontroller.Thepowersupplycircuitisthepowersourceforthesignalgeneratorandthevoltagecomparators.

flowchart
graph LR
A["Crankshaft Sensor"] --> B["Signal Generator"]
B --> C["A Signal"]
B --> D["B Signal"]
C --> E["Comparator"]
D --> E
E --> F["Power Supply Circuit"]
F --> G["Thyristor"]
G --> H["K"]
I["G"] --> G
1-18GENERALINFORMATION
TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)
Thecrankshaftsensorgeneratesacrankshaftsensorsignalandsendsittothesignalgenerator. ThesignalgeneratorgeneratesAandBsignalssynchronizedwiththecrankshaftsensorsignal.Thesesignalsareshowninthefigure.
Thatistosay, the signal generator changesthe crank-shaftsensorsignal into A and B signals.

TechnicalInformation-DC-CDI(DirectCurrent-CapacitorDischargeIgnitionSystem)
(IgnitionTimingAdvancing)
AsignalandBsignalinthecomparatoradvancetheignitiontiming.
ThesignalgeneratordecreasesAsignalastheengine rpmincreasesfromN1,toN3asshown,butkeepsBsignal unchanged.
AandBsignalsareshownwiththesignalsoverlapped.
The comparator compares Asignal with Bsignal. When Asignal voltage becomes equal to or less than Bsignal voltage, the comparators sends atriggersignal to the gate in the thyristor, firing the spark plug.
The intersection point between A and B signals indicates the timing when the spark plug fires. This point moves left (the timing advances) asthe enginerp min increases from N1 to N3 as shown.

Beforeorafteradvancingperiod, theignitiontimingisdeterminedbythecrankshaftssensorsignalandtheignition timingremainsconstant.
The figureshowstheadvancingchart.

line
| Engine Speed | Ignition Timing (deg.BTDC) | | :--- | :--- | | Flat | Flat | | Advance | Advance | | Flat | Flat |1-20GENERALINFORMATION
TechnicalInformation-CoastingEnricher
Thecoastingenricher[A]preventsbackfiringduringenginebrakingbysupplyingarichfuelmixturetotheengine.

natural_image
Close-up of a mechanical component with threaded end and labeled point A (no readable text or symbols)Whenthemotorcycleiscruisingoraccelerating,theenginevacuumislow,andthereturnspring[3] pushesthevalveinitsopenedposition[5].Thepassage[6]isopenandtheairrunsthroughthepilot jet[7]forbetteratomization.
Duringenginebraking,ahhighvacuumisgeneratedbehindthebutterflyvalve[11]. Thisdrawsthe diaphragm[2]againstthereturnspring[3]toclosethevalve[12],andthenthepassage[6]. The mixturebecomesrichtopreventbackfiringbecausetheamountofairisreduced.

GB060153W3 C
- PilotAirJet1
2.Diaphragm
- ReturnSpring
4.Cover
- ValveOpened
6.Passage
7.PilotJet
8.PilotAirJet2
9.PilotScrew
10.AirCleanerHousing
- ButterflyValve(ThrottleValve)
12ValveClosed
TechnicalInformation-CoastingEnricher
FuelandAirSupplyofEnricherSystem

flowchart
graph TD
A["Fuel Tank"] --> B["Float Bowl"]
B --> C["Main Jet"]
D["Air Cleaner"] --> E["Carburetor Bore"]
E --> F["Engine"]
G["Pilot Air Jet1"] --> H["Pilot Jet"]
I["Pilot Air Jet2"] --> H
J["Bypass Outlet"] --> H
K["Pilot Screw"] --> H
L["Slow Passage"] --> H
H --> M["Fuel"]
H --> N["Mixture"]
H --> O["Air"]
1-22GENERALINFORMATION
UnitConversionTable
PrefixesforUnits
| PrefixSymbolPower | |
| megaM×1000000kilok×1000centic× 0 . 0 1millim×0.001microp×0.000001 |
UnitsofMass
| kg | × | 2.205 | = | lb |
| g | × | 0.03527 | = | oz |
UnitsofVolume
| L | × | 0.2642 | = | gal(US) |
| L | × | 0.2200 | = | gal(imp) |
| L | × | 1.057 | = | qt(US) |
| L | × | 0.8799 | = | qt (imp) |
| L | × | 2.113 | = | pint (US) |
| L | × | 1.816 | = | pint (imp) |
| mL | × | 0.03381 | = | oz(US) |
| mL | × | 0.02816 | = | oz(imp) |
| mL | × | 0.06102 | = | cu in |
UnitsofForce
| N | × | 0.1020 | = | kg |
| N | × | 0.2248 | = | lb |
| kg | × | 9.807 | = | N |
| kg | × | 2.205 | = | lb |
UnitsofLength
| km | × | 0.6214 = | mile |
| m× | 3.281 = ft | ||
| mm | × | 0.03937 = | in |
UnitsofTorque
| N·m | × | 0.1020 | = | kgf·m |
| N·m | × | 0.7376 | = | ft·lb |
| N·m | × | 8.851 | = | in·lb |
| kgf·m | × | 9.807 | = | N·m |
| kgf·m | × | 7.233 | = | ft·lb |
| kgf·m | × | 86.80 | = | in·lb |
UnitsofPressure
| kPa | × | 0.01020 | = | kgf/cm2 |
| kPa | × | 0.1450 | = | psi |
| kPa | × | 0.7501 | = | cm Hg |
| kgf/cm2 | × | 98.07 | = | kPa |
| kgf/cm2 | × | 14.22 | = | psi |
| cm Hg | × | 1.333 | = | kPa |
UnitsofSpeed
| km/h | × | 0.6214 | = | mph |
UnitsofPower
| kW× | 1.360 | = | PS | |
| kW× | 1.341 | = | HP | |
| PS | × | 0.7355 | = | kW |
| PS | × | 0.9863 | = | HP |
Units of Temperature

line
| Time (°C) | Value | |---|---| | -40 | -20 | | -20 | -17.8 | | -4 | 0 | | 20 | 32 | | 40 | 4.4 | | 60 | 68 | | 80 | 80 | | 100 | 104 | | 120 | 120 | | 140 | 140 | | 160 | 160 | | 176 | 176 | | 180 | 180 | | 200 | 200 | | 212 | 212 | | 220 | 220 | | 240 | 240 | | 248 | 248 | | 260 | 260 | | 280 | 280 | | 300 | 300 | | 320 | 320 |PeriodicMaintenance
TableofContents
PeriodicMaintenanceChart....2-2
TorqueandLockingAgent......2-4
Specifications....2-9
SpecialTools....2-11
PeriodicMaintenanceProcedures.....2-12
FuelSystem....2-12
FuelHoseandConnection Inspection....2-12
ThrottleGripFreePlayInspection2-12
ThrottleGripFreePlay Adjustment.....2-13
IdleSpeedInspection....2-13
IdleSpeedAdjustment.....2-14
AirCleanerElementCleaning.....2-14
EvaporativeEmissionControl SystemInspection(CAL)......2-14
EngineTop....2-15
AirSuctionValveInspection......2-15
CylinderHeadBoltTightness Inspection....2-16
ValveClearanceInspection......2-16
ValveClearanceAdjustment.....2-17
Clutch....2-17
ClutchLeverFree Play Inspection2-17
ClutchLeverFreePlay Adjustment.....2-17
EngineLubricationSystem....2-18
EngineOilChange....2-18
OilFilterChange 2-19
OilScreenCleaning 2-20
Wheels/Tires....2-21
Spoke Tightness Inspection .....2-21
RimRunoutInspection......2-21
AirPressureInspection/Adjustment....2-22
TireWearInspection....2-23
FinalDrive....2-23
DriveChainSlackInspection......2-23
DriveChainSlackAdjustment.....2-24
DriveChainWear Inspection .....2-25
Drive ChainLubrication....2-26
Brakes....2-26
Brake PedalFree Play Inspection2-26
BrakeShoeLiningWear Inspection....2-27
Brake PadWearInspection.....2-27
BrakeHoseandConnection Inspection....2-27
Brake FluidLevelInspection......2-28
Brake FluidChange....2-28
Brake LineBleeding....2-29
Brake/Master CylinderCup and Dust SealReplacement....2-31
CaliperPiston/DustSeals Replacement....2-31
Brake LightSwitchInspection.....2-31
Brake CableReplacement......2-31
Suspension....2-32
Front ForkOilChange......2-32
Front ForkOilLeakInspection.....2-33
Rear Shock AbsorberOil Leak Inspection....2-33
Swingarm PivotLubrication......2-33
Steering....2-34
Steering Inspection....2-34
Steering Adjustment....2-34
SteeringStemBearing Lubrication....2-35
Electrical System 2-35
BatteryElectrolyteLevel Inspection....2-35
Spark PlugCleaning/Inspection...2-35
Spark PlugGapInspection......2-35
General Lubrication....2-36
Lubrication....2-36
Nut, Bolt, and Fastener Tightness Inspection....2-37
Tightness Inspection....2-37
PeriodicMaintenanceChart
Thescheduledmaintenancemustbedoneinaccordancewiththischarttokeepthemotorcyclein good running condition. The initial maintenance is vitally important and must not be neglected.
| FREQUENCY | * O D O M E T E READING ×1000km (×1000mile) | |||||||
| Whichever comesfirst → | ||||||||
| ↓ Every | 161 (0.6) | 2182 (4) | 4303 (7.5) | 6 (12) | (15) | (20) | (24) | |
| Fuelhose,connections-inspect† | ● | ● | ● | ● | ● | ● | ||
| Throttlegripplay-inspect† | ● | ● | ● | ● | ||||
| Idlespeed-inspect | ● | ● | ● | ● | ||||
| Aircleanerelement-clean†# | ● | ● | ● | |||||
| Evaporativeemissioncontrolsystem (CAL)-inspect† | ● | ● | ● | ● | ● | ● | ● | |
| Airsuctionvalve-inspect(ATCH,DE,SI,US) | ● | ● | ● | ● | ● | ● | ||
| Cylinderheadbolttightness-inspect† | ● | ● | ● | ● | ||||
| Valveclearance-inspect† | ● | ● | ● | |||||
| Clutch-adjust | ● | ● | ● | ● | ● | ● | ● | |
| Engineoil-change# | 6month | ● | ● | ● | ● | ● | ● | ● |
| Oilfilter-replace | ● | ● | ● | ● | ||||
| Oilscreen-clean | ● | ● | ● | ● | ||||
| Spoketightnessandrimrunout-inspect† | ● | ● | ● | ● | ● | ● | ● | |
| Tirewear-inspect† | ● | ● | ● | ● | ● | ● | ||
| Drivechainslack-inspect†# | 1000km | |||||||
| Drivechainwear-inspect†# | ● | ● | ● | ● | ● | ● | ||
| Drivechain-lubricate# | 600km | |||||||
| Brakepedalfreeplay-inspect† | ● | ● | ● | ● | ● | ● | ● | |
| Brakeliningorpadwear-inspect†# | ● | ● | ● | ● | ● | ● | ||
| Brakehose,connections-inspect† | ● | ● | ● | ● | ● | ● | ||
| Brakefluidlevel-inspect† | month | ● | ● | ● | ● | ● | ● | ● |
| Brakefluid-change | 2years | ● | ||||||
| Brakemastercylindercupanddust cover-replace | 4years | |||||||
| Caliperfluidsealanddustseal-replace | 4years | |||||||
| Brakelightswitch-inspect† | ● | ● | ● | ● | ● | ● | ● | |
| Brakecable-replace | 2years | ● | ||||||
| Frontforkoil-change | 2years | ● | ||||||
| Frontforkoilleak-inspect† | ● | ● | ● | |||||
| Rearshockabsorberoilleak-inspect† | ● | ● | ● | |||||
| Swingarmpivot-lubricate | ● | ● | ● | |||||
| Steering-inspect† | ● | ● | ● | ● | ● | ● | ● | |
| Steeringstembearing-lubricate | 2years | ● | ||||||
| Batteryelectrolytelevel-inspect† | 6months | ● | ● | ● | ● | ● | ● | |
PeriodicMaintenanceChart
| FREQUENCY | * O D O M E T E R READING ×1000km (×1000mile) | |||||||
| Whichever comesfirst → | ||||||||
| ↓ Every | 161(0.6) | 2182(4) | 43036(7.5) | (12) | (15) | (20) | (24) | |
| Operation | ||||||||
| Sparkplug-cleanandgap† | ● | ● | ● | ● | ● | ● | ||
| Generallubrication-perform | ● | ● | ● | |||||
| Nuts,bolts,andfastenerstightness-inspect | ● | ● | ● | ● | ||||
: Service more frequently when operating in severe conditions; dusty, wet, muddy, high speed, or frequent starting/stopping.
*: For higher odometer readings, repeat at the frequency interval established here.
†: Replace, add, adjust, clean, ortorque if necessary.
AT: Austria
CAL: California
CH: Switzerland
DE: Germany
SG: Singapore
US: United States
TorqueandLockingAgent
The following tables list the tightening torque for them major fasteners requiring use of a non-permanent locking agentor liquid gasket.
Lettersusedinthe"Remarks"columnmean:
L: Applyanon-permanentlockingagenttothethreads.
M:Applymolybdenumdisulfidegrease.
O: Applyanoiltothethreadsandseatingsurface.
S: Tightenthefasteners following the specified sequence.
| Fastener | Torque | Remarks | ||
| N·mkgf | mft·lb | |||
| FuelSystem | ||||
| UpperChamberCoverScrews3.50.3631in·lb | ||||
| SpringSeatScrews | 0.80.08 | 07 in · lb | ||
| ChokeLeverSetScrew | 0.8 | 0.080 | 7 in·lb | L |
| ChokeLeverPivotScrew | 2.00.20 | 17in·lb | ||
| PilotAirJet | 1.80.1815 | in·lb | ||
| Coasting Enricher Cover Screws | 2.0 | 0.20 | 17 in·lb | |
| PilotJet | 0.80.0807 | in · lb | ||
| MainJet | 1.80.1815 | in·lb | ||
| FloatValveHolderScrew | 2.00.20 | 17in·lb | ||
| ChokePlungerCap | 3.90.40 | 35in·lb | ||
| FloatBowlScrews | 2.00.20 | 17in·lb | ||
| CarburetorDrainPlug | 2.00.20 | 17in·lb | ||
| FuelTapPlateScr ews | 0.80.08 | 07 in · lb | ||
| Fuel Tap Diaphragm Cover Screws | 1.0 | 0.10 | 9 in·lb | |
| FuelTapMountingBolts(WhiteWasher) | 2.50.2522 | in·lb | ||
| FuelTapMountingBolts(BlackWasher) | 4.90.5043 | in·lb | ||
| EngineTopEnd | ||||
| ValveAdjustingCapBolts(Bn125-A1~ A3) | 9.8 | 1.0 | 87in·lb | |
| ValveAdjusting gCapBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| Camshaft Chain Cover Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87 in·lb | |
| Camshaft Chain Cover Bolts (BN125-A4 ~) | 8.8 | 0.90 | 78 in·lb | |
| Cylinder Head Bolts M9 | 26 | 2.7 | 19 | O, M, S(washer) |
| CylinderHeadBoltsM6 | 12 | 1.2104in·lb | S | |
| CamshaftChainCoverDamperBolts(BN125-A1~ A3) | 9.8 | 1.0 | 87in·lb | |
| CamshaftChainCoverDamperBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| Sparkplug | 13 | 1.3 | 9.5 | |
| Cylinder Head Blank Cap Bolt (BN125-A1 ~ A3) | 9.8 | 1.0 | 87in·lb | |
| CylinderHeadBlankCapBolt(BN125-A4~) | 8.80.90 | 78in·lb | ||
| CarburetorHolderBolts | 9.8 | 1.0 | 87in·lb | |
| Air Suction Valve Cover Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87in·lb | |
| AirSucti onValveCoverBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| CylinderHeadPlug | 4.90.5043 | in·lb | ||
| VacuumHoseFitting | 5.90.6052 | in·lb | ||
TorqueandLockingAgent
| Fastener | Torque | Remarks | ||
| N·mkgf· | mft·lb | |||
| OilPipeBanjoBoltsM89.81.087in·lb | ||||
| OilPipeBanjoBoltsM10252.518 | ||||
| Oil Pipe Mounting Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87 in·lb | |
| OilPipeMountingBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| CamshaftBearingHolderBolts(BN125-A1~A3) | 9.81.08 | 7in·lb | ||
| Camshaft Bearing Holder Bolts (BN125-A4 ~) | 8.8 | 0.90 | 78 in·lb | |
| Camshaft Sprocket Bolts | 12 | 1.2 | 104 in·lb | |
| Camshaft Chain Holder Screw | 4.9 | 0.50 | 43 in·lb | |
| Camshaft Chain Guide Bolts | 8.8 | 0.90 | 78 in·lb | |
| ChainTensionerMountingBolts(BN125-A1~A3) | 9.81.08 | 7in·lb | ||
| Chain Tensioner Mounting Bolts (BN125-A4 ~) | 8.80.90 | 78in·lb | ||
| ChainTensionerCap | 4.90.50 | 43in·lb | ||
| ValveAdjustingScrewLocknuts | 151.5 | 11 | ||
| Rocker Shaft Bolts | 8.8 | 0.90 | 78 in·lb | |
| Muffler Mounting Nut | 15 | 1.5 | 11 | |
| Clutch | ||||
| Clutch Hub Bolt | 98 | 10.0 | 72 | |
| ClutchSpringBolts | 8.80.907 | 8in·lb | ||
| Clutch Cover Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87 in·lb | |
| ClutchCoverBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| Oil Seal Retaining Plate Bolts (BN125-A1 ~ A3) | 9.81.08 | 7in·lb | ||
| Oil Seal Retaining Plate Bolts (BN125-A4 ~) | 8.80.90 | 78in·lb | ||
| ClutchCoverDamperBolts | 8.80.90 | 78in·lb | L | |
| StarterLocknutSwitchScrews | 1.0 | 0.10 | 9 in·lb | |
| PrimaryGearNut | 697.051 | |||
| EngineLubricationSystem | ||||
| EngineOilDrainPlug | 181.813 | |||
| Oil Screen Cover Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87 in·lb | |
| Oil Screen Cover Bolts (BN125-A4 ~) | 8.8 | 0.90 | 78 in·lb | |
| Oil Pressure Relief Valve | 15 | 1.5 | 11 | |
| Oil Filter Cover Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87 in·lb | |
| OilFilterCoverBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| OilPumpMountingScrews | 4.90.50 | 43in·lb | ||
| OilPumpAssyScrew | 9.81.08 | 7in·lb | ||
| OilPipeBanjoBolt | 252.518 | Clutch Cover,S Cylinder Head,S | ||
| Oil Pipe Banjo Bolts | 9.8 | 1.0 | 87 in·lb | |
| OilPipeMountingBolts(BN125-A1~ A3) | 9.81.08 | 7in·lb | ||
| OilPipeMountingBolts(BN125-A4~) | 8.80.90 | 78in·lb | ||
| OilFillerPlug | 2.50.25 | 22in·lb | ||
TorqueandLockingAgent
| Fastener | Torque | Remarks | ||
| N·m | kgf·mft·lb | |||
| EngineRemoval/installation | ||||
| EngineMountingBolts,Nuts(M10) | 444.533 | |||
| EngineMountingBolts,Nuts(M8) | 252.518 | |||
| EngineMountingBracketBolts,Nuts252.518 | ||||
| EngineGroundTerminalBolt | 9.81.087 | in·lb | ||
| Crankshaft/transmission | ||||
| PrimaryGearNut | 697.051 | |||
| BalancerShaftGearNut | 788.058 | O | ||
| CrankcaseBolts | 8.80.907 | in·lb | ||
| CrankcaseBearingR etainerScrews | 4.90.504 | in·lb | ||
| Neutral Switch | 15 | 1.5 | 11 | |
| ShiftDrumCamScrew | 4.90.5043 | in·lb | L | |
| Gear Set Lever Nut | 11 | 1.1 | 95 in·lb | |
| Engine Sprocket Holder Bolts | 12 | 1.2 | 104 in·lb | |
| Shift Return Spiring Pin (Bolt) | 29 | 3.0 | 21 | L |
| Shift Lever Clamp Bolt | 12 | 1.2 | 104 in·lb | |
| ShiftPedalNut | 303.122 | |||
| Wheels/tires | ||||
| FrontAxleNut | 788.058 | |||
| Rear Axle Nut | 98 | 10.0 | 72 | |
| Tire Air Valve Nuts | 1.5 | 0.15 | 13 in·lb | |
| Spoke Nipples | 2.0 ~ 3.9 | 0.20 ~ 0.40 | 17 ~ 35 in·lb | |
| FinalDrive | ||||
| Engine Sprocket Cover Bolts (BN125-A1 ~ A3) | 9.8 | 1.0 | 87 in·lb | |
| Engine Sprocket Cover Bolts (BN125-A4 ~) | 8.8 | 0.90 | 78 in·lb | |
| Engine Sprocket Cover Damper Bolts | 8.8 | 0.90 | 78 in·lb | L |
| TorqueLinkBoltandNut | 343.525 | |||
| RearSprocketN ut | 262.719 | |||
| Rear Axle Nut | 98 | 10.0 | 72 | |
| EngineSprocketHolderBolts | 121.210 | in·lb | ||
| Brakes | ||||
| BrakeDiscBolt | 272.820 | |||
| CaliperMountingBolts | 252.518 | |||
| CaliperHolder ShaftBolt | 181.813 | |||
| CaliperPadBolts | 181.813 | |||
| Caliper Bleed Valves | 7.8 | 0.80 | 69 in·lb | |
| BrakeHoseBanjoBolts | 252.518 | |||
| Brake Lever Pivot Bolt | 5.9 | 0.60 | 52 in·lb | |
| Brake Lever Pivot Bolt Locknut | 5.9 | 0.60 | 52 in·lb | |
| FrontBrakeRes ervoirCapScrews | 1.50.15 | 13in·lb | ||
| Front Brake Light Switch Screws | 1.0 | 0.10 | 9 in·lb | |
| Front Master Cylinder Clamp Bolts | 8.8 | 0.90 | 78 in·lb | S |
| TorqueLinkBoltandNut | 343.525 | |||
TorqueandLockingAgent
| Fastener | Torque | Remarks | ||
| N·mkgf | mft·lb | |||
| BrakePedalBolt9.81.087in·lb | ||||
| Suspension | ||||
| FrontForkTopPlugs232.317 | ||||
| FrontForkBottomAllenBolts202.015L | ||||
| FrontForkClampBolts(Upper) | 202.015 | |||
| FrontForkClampBolts(Lower) | 343.525 | |||
| RearShockAbsorberNuts(Upper) | 343.525 | |||
| RearShockAbsorberBolts(Lower) | 343.525 | |||
| Swingarm Pivot Nut | 98 | 10.0 | 72 | |
| Steering | ||||
| SteeringStemHeadBolt | 444.533 | |||
| SteeringStemNut | Hand-tight or4.9 | Hand-tight or0.50 | Hand-tight or43in·lb | |
| HandlebarNuts | 343.525 | |||
| Handlebar Holder Clamp Bolts (BN125-A3 ~) | 20 | 2.0 | 15 | S |
| Handlebar Weight Screws | - | - | - | L |
| Handlebar Switch Housing Screws | 3.4 | 0.35 | 30 in·lb | |
| FrontForkClampBolts(Upper) | 202.015 | |||
| FrontForkClampBolts(Lower) | 343.525 | |||
| Frame | ||||
| FrontFootpegBolts | 232.3 | 16.5 | ||
| ElectricalSystem | ||||
| SparkPlug | 13 | 1.3 | 113 in·lb | |
| CrankshaftSensorScrews | 3.9 | 0.40 | 35in·lb | |
| Ignition Coil Bolt | 6.9 | 0.70 | 61 in·lb | |
| Igniter Mounting Screws | 4.9 | 0.50 | 43 in·lb | |
| AlternatorCoverBolts | 8.8 | 0.9078in·lb | ||
| Alternator Cover Damper Bolts | 8.8 | 0.90 | 78 in·lb | L |
| Alternator Rotor Nut (BN125-A1 ~ A2) | 69 | 7.0 | 51 | |
| Alternator Rotor Nut (BN125-A3) | 98 | 10.0 | 72 | |
| AlternatorRotorNut(BN125-A4~) | 104 | 10.6 | 76 | |
| StarterCoilBolts | 13 | 1.3 | 113 in·lb | |
| Alternator Lead Holder Bolts (BN125-A1 ~ A2) | 13 | 1.3 | 113 in·lb | |
| AlternatorLeadHolderBolts(BN125-A3~) | 8.8 | 0.9078in·lb | ||
| StarterMotorTerminalLocknut | 6.9 | 0.7061in·lb | ||
| StarterMotorTerminalNut | 4.9 | 0.5043in·lb | ||
| Starter Relay Terminal Bolt | 4.9 | 0.50 | 43 in·lb | |
| Starter Motor Assembly Bolts | 3.4 | 0.35 | 30 in·lb | |
| Starter Motor Mounting Bolts | 8.8 | 0.90 | 78 in·lb | |
| Starter Motor Clutch Bolts (BN125-A1) | 34 | 3.5 | 25 | L |
| Starter Motor Clutch Bolts (BN125-A2 ~) | 12 | 1.2 | 104 in·lb | L |
| Headlight Body Screws | 2.9 | 0.30 | 26 in·lb | |
| HandlebarSwitchHousingScrews | 3.4 | 0.3530in·lb | ||
2-8 PERIODIC MAINTENANCE
TorqueandLockingAgent
| Fastener | Torque | Remarks | ||
| N·m | kgf·mft·lb | |||
| TurnSignalLightHolderNuts | 5.90.60 | 52in·lb | ||
| NeutralSwitch | 151.511 | |||
| SidestandSwitchScrews | 3.90.40 | 35in·lbL | ||
The table below, relating tightening torque to thread diameter, lists the basic torque for the bolts and nuts. Use histable for only the bolts and nuts which do not require a specific torque value. Allof the values are for use with dry solvent-cleaned threads.
BasicTo rqueforGeneralFasteners
| Threadsdia.(mm) | Torque | ||
| N·m | kgf·m | ft·lb | |
| 5 | 3.4 ~ 4.9 | 0.35 ~ 0.50 | 30 ~ 43 in·lb |
| 6 | 5.9 ~ 7.8 | 0.60 ~ 0.80 | 52 ~ 69 in·lb |
| 8 | 14 ~ 19 | 1.4 ~ 1.9 | 10.0 ~ 13.5 |
| 10 | 25 ~ 34 | 2.6 ~ 3.5 | 19.0 ~ 25 |
| 12 | 44 ~ 61 | 4.5 ~ 6.2 | 33 ~ 45 |
| 14 | 73 ~ 98 | 7.4 ~ 10.0 | 54 ~ 72 |
| 16 | 115 ~ 155 | 11.5 ~ 16.0 | 83 ~ 115 |
| 18 | 165 ~ 225 | 17.0 ~ 23.0 | 125 ~ 165 |
| 20 | 225 ~ 325 | 23 ~ 33 | 165 ~ 240 |
Specifications
| Item | StandardServiceLimit | |
| FuelSystemThrottle Grip Free PlayIdleSpeed1300±50r/min(rpm)AirCleanerElementOil:GradeSE,SForSGclass--ViscositySAE30-- | --- | |
| --- | ||
| EngineTopEndValveClearance:InletExhaust | 0.08~0.12(0.0031~0.0047in.)0.15~0.19(0.0059~0.0075in.) | --- |
| --- | ||
| ClutchClutch Lever Free Play | 2~3mm (0.08~0.12 in.) | --- |
| EngineLubricationSystemEngineOil:Grade:(BN125-A1~A3)APISE,SFor(BN125-A4~)ViscosityCapacity1.1L(1.16USqt)(whenfilterisnotremoved)Level | SGAPI SE, SF or SGAPISH,SJorSLwithJASOMASAE10W-40iterisnotremoved)1.2 L (1.27 US qt) (when filter is removed)1.4L(1.48USqt)(whenengineiscompletelydry)Betweenupperandlowerlevellines(Wait 2~3 minutes after idling orrunning) | --- |
| --- | ||
| --- | ||
| --- | ||
| --- | ||
| --- | ||
| --- | ||
| TiresRimRunout(WithTireInstalled):AxialRadialAirPressure(WhenCold):Front:(BN125-A1~A2)(BN125-A3~)Rear:(BN125-A1~A2)(BN125-A3~)TreadDepth:Front:(BN125-A1~A2)(BN125-A3~A5) | TIR 0.8 mm (0.03 in.) or lessTIR 1.0 mm (0.04 in.) or lessUp to 185 kg (408 lb) load: 150 kPa (1.5kgf/cm2,21psi)Up to 155 kg (342 lb) load: 150 kPa (1.5kgf/cm2,21psi)Up to 185 kg (408 lb) load: 175 kPa(1.75kgf/cm2,25psi)Up to 155 kg (342 lb) load: 175 kPa(1.75kgf/cm2,25psi)4.5 mm (0.18 in.)4.0 mm (0.157 in.) | TIR 2.0 mm (0.08 in.)TIR 2.0 mm (0.08 in.)--- |
| --- | ||
| --- | ||
| --- | ||
| --- | ||
| 1 mm (0.04 in.)1 mm (0.04 in.) |
Specifications
| ItemStandardServiceLimit | ||
| (BN125-A6 ~)Rear7.3mm(0.29in.)2mm(0.08in.) | 4.1 mm (0.161 in.) | 1 mm (0.04 in.) |
| FinalDriveDrive Chain Slack20LinkLength | 25 ~ 40 mm (0.98 ~ 1.57 in.)254.0~ 254.6mm(10.00 ~ 10.02in.) | - - -259mm(10.2in.) |
| BrakesBrakeLeverFreePlayNon-adjustable- - -Brake Pedal Free PlayShoe Lining ThicknessBrakeFluid:GradeBrakePadLiningThickness:(BN125-A1 ~ A2)(BN125-A3 ~)BrakeLightTiming:FrontRear | 20 ~ 30 mm (0.79 ~ 1.18 in.)3.85 ~ 4.15 mm (0.152 ~ 0.163 in.)DOT44.5 mm (0.177 in.)6.0 mm (0.236 in.)Pulled onOnafterabout10mm(0 .39in.)ofpedal travel | - - -2 mm (0.08 in.)- - -1 mm (0.04 in.)1 mm (0.04 in.)- - -- - - - - |
| SuspensionOil ViscosityOilCapacity(ParUnit):CompletelyDryWhenChangingOilOilLevel(FullyCompressed,WithoutMainSpring) | SHOWA SS-8 or equivalent191±2.5mL(6.46±0.085USoz.)Approx165mL(5.58USoz.)218±2mm(8.58±0.08in.) | - - -- - - -- - - - |
| ElectricalsystemSpark Plug GapBattery Electrolyte Level | 0.7 ~ 0.8 mm (0.028 ~ 0.031 in.)Between level lines | - - -- - - - |
SpecialTools
SteeringStemNutWrench: 57001-1100

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Line drawing of a mechanical wrench with a curved handle and two notches (no text or symbols)ForkOilLevelGauge: 57001-1290

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Technical line drawing of a mechanical assembly with spring-loaded components (no text or symbols)Jack:
57001-1238

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Technical line drawing of a mechanical support structure (no text or symbols)2-12 PERIODIC MAINTENANCE
PeriodicMaintenanceProcedures
FuelSystem
FuelHoseandConnectionInspection
The fuelhose is designed to be used throughout the motorcycle's lifewithout anymaintenance, however, if the motorcycle is not properly handled, the inside the fuel line can cause fuel to leaks [A] or the host of a vehicle. Remove the fuel tank (see Fuel System chapter) and check the fuel hose.
★Replacethefuelhoseifanyfraying,cracks[B]orbulges [C]arenoticed.
- Check that the hose is securely connected and clamps are tightened correctly.
- Wheninstalling, routethehoseaccordingtoCable, Wire, and HoseRoutingsectionintheAppendixchapter.
- Wheninstallingthefuelhoseavoidssharpbending,kinking,flatteningortwisting,androutethefuelhosewitha minimumofbendingsothatthefuelflowwillnotbeobstructed.
★Replacethehoseifithasbeensharplybentorkinked.
ThrottleGripFreePlayInspection
Ifthethrottlegriphasexcessivefreeplayduetocable stretchormisadjustment,therewillbeadelayinthrottleresponse.Also,thethrottlevalvemaynotopenfullyatfull throttle.Ontheotherhand,ifthethrottlegriphasnoplay, thethrottlewillbehardtocontrol,andtheidlespeedwill beerratic.CheckthethrottlegripplayperiodicallyinaccordancewiththePeriodicMaintenanceChart,andadjustthe playifnecessary.
ThethrottlecableroutingisshowninCable, Harness, HoseRoutingsectionintheAppendixchapter.
- Checkthethrottlegripfreeplay[A].
★Ifthefreeplayisincorrect,adjustthethrottlecable.
ThrottleGripFreePlay
Standard: 2 \~ 3 mm (0.08 \~ 0.12 in.)
- Check that the throttle grip movess smoothly from full open to close, anth throttle closes quickly and completely in all steering positions by thereturn spring.
★ Ifthethrottlegripdoesnotreturnproperly, checkthethrottlecablerouting, gripfreeplay, andcabledamage. Then lubricatethethrottlecable. - Runtheengineattheidlespeed, andturnthehandlebar allthewaytotherightandlefttoensurethattheidlespeed doesnotchange.
★ If the idlespeed increase, check the throttlegrip free play and the cablerouting.


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Mechanical component with labeled section A, showing shaft and housing assembly (no readable text or symbols)PeriodicMaintenanceProcedures
ThrottleGripFreePlayAdjustment
- Loosenthelocknut[A].
- Turntheadjuster[B]untiltheproperamountoffreeplay canbeobtained.
-
Tightenthelocknutagainsttheadjuster.
★ Ifthethrottlegripfreeplaycannotbeadjustedwiththe adjuster, usethecableadjustersatthelowerendsofthe throttlecables. -
Loosenthelocknut, andscrewtheadjusterattheupper endoftheacceleratorcableallthewayin.
- Tightenthelocknutsecurelyagainsttheadjuster.
- Adjustereitherlowernuts[A]oftheacceleratorcableor the deceleratorcableuntilthecorrectthrottlegripfreeplay isobtained.
★ Ifthefreeplaycannotbeadjustedwiththeloweradjusting nuts, usetheadjusterattheupperendofthecableagain.
- Check that the throttle pulley [B] stops [C] against the idle adjustingscrew [A] with the throttle grip closed.


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Mechanical assembly diagram showing components like gears and springs (no visible text or labels)
IdleSpeedInspection
- Starttheengineandwarmitupthoroughly.
- Withtheengineidling,turnthehandlebartobothsides.
★ Ifhandlebarmovementchangestheidlespeed,thethrot-tlecablemaybeimproperlyadjustedorincorrectlyrouted,ordamaged.Besuretocorrectanyoftheseconditions beforeriding(seeCable,Wire,andHoseRoutingsection inAppendixchapter).
WARNING
Operationwithanimproperlyadjusted,incorrectly routed,ordamagedcablecouldresultinanunsafe ridingcondition.
- Checkidlespeed.
★ If the idlespeedis out of the specified range, adjust it.
IdleSpeed
Standard:1300±50r/min(rpm)
2-14 PERIODIC MAINTENANCE
PeriodicMaintenanceProcedures
IdleSpeedAdjustment
- Starttheengineandwarmitupthoroughly.
- Turntheidleadjustingscrew[A]untiltheidlespeedis correct.
Openandclosethethrottleafewtimestomakesurethat theidlespeediswithinthespecifiedrange.Readjustif necessary.
Front[B]
AirCleanerElementCleaning
NOTE
○ Industryareas, theelementshouldbecleanedmore frequentlythantherecommendedinterval.
○ Afterridingthroughrainoronmuddyroads, theelement should be cleaned immediately.
○ Sincerepeatedcleaningopenstheporesofthefoam element,replaceitwithanewoneinaccordancewith thePeriodicMaintenanceChart. Also,ifthereisabreak intheelementmaterialoranyotherdamagetotheelement,replacetheelementwithanewone.
WARNING
Cleantheelementinawell-ventilatedarea, and makesurethatthereisnosparkorflameanywhere neartheworkingarea. Becauseofthedangerof highlyflammableliquids, donotusegasolineora low-flashpointsolventtocleantheelement.
- Removetheaircleanerelement(seeFuelSystemchapter).
- Cleantheelementinabathofhigh-flash-pointsolvent, andthendryitwithcompressedairorbyshakingit.
- Visuallychecktheelementfortearsorbreaksandreplace thedamagedelementwithanewone.
- Aftercleaning, saturatetheelementwithSE,SF,orSG classSAE30oil,squeezeoutexcessoil.
- Wraptheelement[A]inacleanrag[B]andsqueezeitas dryaspossible.
EvaporativeEmissionControlSystemInspection (CAL)
CanisterInspection
- Removethecanistercover[A].

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Mechanical assembly diagram showing components labeled A and B with no readable text or symbols

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Close-up of a car's front grille and engine compartment, showing a black head with circular features and a labeled component 'A' (no text or symbols beyond label)PeriodicMaintenanceProcedures
- Removethecanistermountingbracketbolts[A]andremovethebrackets[B]andcanister[C]together.
- Disconnectthehosesfromthecanister.
- Visually inspect the canister for cracks and other damage.
★ Ifthecanisterhasanycracksorbaddamage,replaceit withanewone.
NOTE
○Thecanisterisdesignedtoworkwellthroughthemotor cycle'slifewithoutanymaintenanceifitisusedunder normalconditions.
SeparatorInspection
- Removetherightsidecover(seeFramechapter).
- Disconnect the hoses from the liquid/vapor separator [A], and remove these separator up from the bracket.
- Visually inspect these separator for cracks and other damage.
★ If these separator has any cracks or is badly damaged, replace it with anewone.


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Close-up of mechanical components with no visible text or symbolsEngineTop
AirSuctionValveInspection
- Removetheairsuctionvalve(seeEngineTopEndchapter).
- Visually inspect thereeds[A] for cracks, folds, warps, heat damage, or other damage.
★ Ifthereisanydoubtastotheconditionofthereed,replace theairsuctionvalveasanassembly. - Checkthereedcontactareas[B]ofthevalveholderfor grooves,scratches,anysignsofseparationfromthe holder,orheatdamage.
★ If thereisanydoubtastotheconditionofthereedcontact areas,replaceheairsuctionvalveasanassembly.
★ Ifanycarbonorotherforeignparticles have accumulated between thereed and thereed contact area, wash the valve assembly with a high-flash-points solvent.

CAUTION
Donotscrapeoffthedepositswithascpraperasthis coulddamagetherubber,requiringreplacementof thesuctionvalveassembly.
2-16 PERIODIC MAINTENANCE
PeriodicMaintenanceProcedures
CylinderHeadBoltTightnessInspection
- Checkthat6mm[A]and9mm[B]cylinderheadboltsare tightenedevenly.
★Standardheadboltstighteningtorqueareshownbelow.
TighteningTorque
6mmCylinderHeadBolts:12N·m(1.2kgf·m,104in·lb)
9mmCylinderHeadBolts:26N·m(2.7kgf·m,19ft·lb)

ValveClearanceInspection
CAUTION
Ifvalveclearanceisleftunadjusted, wearwilleventuallycausethevalvestoremainpartyopen, which lowersperformance, burnsthevalvesandthevalve seats, and may causes seriousenginedamage.
NOTE
○ Valveclearancemustbecheckedandadjustedwhen theengineiscold(atroomtemperature).
- Remove:
ValveAdjustingCaps[A]
CamshaftChainCover[B]
- Turnthecamshaftcenterbolt[A]counterclockwisewitha wrench.
○Makingsurethattheinletvalveopensandthencloses, starttoturntheboltinthesamedirectionuntilthe“T”mark [C]onthecamshaftsprocketalignswiththetimingmark [B]onthecylinderhead.ThisshowsthatthepistonTDC isattheendofthecompressionstroke.
- Usingathicknessgauge[A],measurethevalveclearance betweenheadjustingscrewandvalvestem.Measure theclearanceforbothvalvesatatime.
ValveClearance(whencold)
Standard:
Inlet
0.08 \~ 0.12 mm (0.0031 \~ 0.0047 in.)
Exhaust
0.15 \~ 0.19 mm (0.0059 \~ 0.0075 in.)

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Close-up of a mechanical assembly with labeled parts A and B (no readable text or symbols beyond labels)

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Close-up of a mechanical assembly with labeled component A (no readable text or symbols)PeriodicMaintenanceProcedures
ValveClearanceAdjustment
★ If the valve clearance is not within the specified range, adjust the clearance by loosening the lock nut and turning the adjustingscrew.
- Tightenthenutstothespecifiedtorqueandcheckthe valveclearanceagain.
Torque-ValveAdjustingScrewLocknut:15N·m(1.5 kgf·m,11ft·lb)
- Installthevalveadjustingcapswiththeir"up"marks[A] up.
Torque-ValveAdjustingCapBolts
(BN125-A1\~A3):9.8N·m(1.0kgf·m,87in·lb)
(BN125-A4 \~): 8.8 N·m (0.90 kgf·m, 78 in·lb)

Clutch
ClutchLeverFreePlayInspection
- Check that the clutch cable upper end is fully seated in the adjuster[A].
- Pulltheclutchlever[B]justenoughtotakeupthefree play[C].
○Measurethegap(freeplay)betweentheleverandthe leverholder.
★ Ifthegap(freeplay)istoowide, theclutchmaynotreleasefully. Ifthegapistoonarrow, theclutchmaynotengagefully. Ineithercase, adjustit.

ClutchLeverFreePlay
Standard: 2 \~ 3 mm (0.08 \~ 0.12 in.)
ClutchLeverFreePlayAdjustment
WARNING
To avoid as serious burn, nevertouch the engine or exhaust pipe during clutch adjustment.
- Slidebackthedustcover.
- Loosenbothadjusternuts[A]attheclutchcablebracket asfarastheywillgo.
- Loosentheknurledlocknut[A]attheclutchlever.
- Turn the adjuster [B] so that 5 \~ 6 mm (0.20 \~ 0.24 in.) [C] of threads are visible.

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Close-up of an automotive engine component with visible springs, calipers, and a circular valve (no text or symbols)