B450 - Grass trimmer Shindaiwa - Free user manual and instructions

USER MANUAL B450 Shindaiwa

• B450 BRUSHCUTTER WARNING! Read this manual and familiarize yourself with its contents. This machine is designed for cutting grass, weed, and bushes. Do not use this machine for other purposes. Minimize the risk of injury to yourself and others. Do not operate or service this machine unless you clearly understand this manual. Keep this manual at a particular place so that you can reread it when- ever you have a question about its use. ENGLISH (Original instructions) FRANÇAIS (Notice originale) ITALIANO (Istruzioni originali)2 Throughout this manual are special atten- tion statements. WARNING! A statement preceded by the triangular attention symbol and the word “WARN- ING” contains information that should be acted upon to prevent serious bodily injury. CAUTION! A statement preceded by the word “CAUTION” contains information that should be acted upon to prevent me- chanical damage. IMPORTANT! A statement preceded by the word “IMPORTANT” is one that possesses special signi¿ cance. NOTE: A statement preceded by the word “NOTE” contains information that is handy to know and may make your job easier. Attention Statements IMPORTANT! The operational procedures described in this manual are intended to help you get the most from unit as well as to protect you and others from harm. These proce- dures are guidelines for safe operation un- der most conditions, and are not intended to replace any safety rules and/or laws that may be in force in your area. If you have questions regarding your Shindaiwa power tool, or if you do not understand something in this manual, your Shindaiwa dealer will be glad to assist you. Introduction Page Shindaiwa 450-series hand held power equipment has been designed and built to deliver superior performance and reliabil- ity without compromise to quality, comfort, safety or durability. Shindaiwa’s high-performance engines represent the leading edge of 2-cycle en- gine technology, delivering exceptionally high power with remarkably low displace- ment and weight. As an owner/operator, you’ll soon discover for yourself why Shindaiwa is simply in a class by itself! IMPORTANT! The information contained in this owner's/ operator's manual describes units avail- able at the time of publication. YAMABIKO corporation reserves the right to make changes to products without prior notice, and without obligation to make alterations to units previously manu- factured. Attention Statements p. 2
• General Safety Instructions p. 3
• Safety Labels p. 5
• Checking Unit Condition p. 5
• Unit Description p. 6
• Speci¿ cations p. 6
• Assembly Procedure p. 7
• Mixing Fuel p. 11
• Starting the Engine p. 12
• Stopping the Engine p. 13
• Engine Idle Adjustment p. 13
• Shoulder Strap/Harness p. 13
• Operation p. 14
• Using a Brushcutter With a Trimmer Head p. 15
• Maintenance p. 15
• Long Term Storage p. 17
• Blade Sharpening p. 17
• Troubleshooting Guide p. 18
• Declaration of Conformity Contents Read and follow this operators manual. Failure to do so could result in serious injury. Wear head, eye, and hearing protection during the operation of this machine. Wear non-slip gloves, long trousers and non-skid boots during the operation of this machine. make sure no one is within 15 meters os an operating machine. Beware of thrown objects. The maximum speed of the cutting attachment shaft in min p. 21

Sound Power Level (measured in accordance with 2000/14/EC)3 Work Safely Trimmers and brushcutters operate at very high speeds and can do serious damage or injury if they are misused or abused. Never allow a person without training or instruction to operate this unit! WARNING! Use Good Judgment NEVER run the engine when trans- porting the unit. NEVER run the engine indoors! Make sure there is always good ventila- tion. Fumes from engine exhaust can cause serious injury or death. ALWAYS use the proper cutting tool for the job. ALWAYS stop the unit immediately if it suddenly begins to vibrate or shake. Inspect for broken, missing or improp- erly installed parts or attachments. NEVER extend trimming line beyond the length speci¿ ed for your unit. ALWAYS keep the unit as clean as practical. Keep it free of loose vegeta- tion, mud, etc. ALWAYS hold the unit ¿ rmly with both hands when cutting or trimming, and maintain control at all times. ALWAYS keep the handles clean. ALWAYS disconnect the spark plug wire before performing any maintenance work. ALWAYS, if a saw blade should bind fast in a cut, shut off the engine im- mediately. Push the branch or tree to ease the bind and free the blade. Stay Alert You must be physically and mentally ¿ t to operate this unit safely. General Safety Instructions WARNING! Never make unauthorized attachment installations. WARNING! Never operate power equip- ment of any kind if you are tired or if you are under the inÀ uence of alcohol, drugs, medication or any other substance that could affect your ability or judgement.4 SAFETY Be Aware of the Working Environment Avoid long-term opera- tion in very hot or very cold weather. Make sure bystanders or observers outside the 15 meter “danger zone” wear eye protection. Be extremely careful of slip- pery terrain, especially during rainy weather. Always make sure the appropriate cutting attachment shield is correctly installed. If contact is made with a hard object, stop the engine and inspect the cutting attachment for damage. Be constantly alert for objects and debris that could be thrown either from the rotating cutting attachment or bounced from a hard surface. Reduce the risk of bystanders being struck by À ying debris. Make sure no one is within 15 meters — that’s about 16 paces — of an operating attachment. Beware of a coasting blade when brushcut- ting or edging. A coasting blade can injure while it continues to spin after the throttle trigger is released or after the engine is stopped.

METERS ALWAYS clear your work area of trash or hidden debris that could be thrown back at you or toward a bystander. When operating in rocky terrain or near electric wires or fences, use extreme caution to avoid contacting such items with the cutting attachment. The Properly Equipped Operator Always wear a harness when operating a unit equipped with a blade. Always operate with both hands ¿ rmly grip- ping the unit. Wear close-¿ tting clothing to protect legs and arms. Gloves offer added protection and are strongly recom- mended. Do not wear clothing or jewelry that could get caught in machinery or underbrush. Secure long hair so that it is above shoulder level. NEVER wear shorts! Wear hearing protection devices and a broad-brimmed hat or helmet. Always wear eye protection such as goggles or safety glasses to shield against thrown objects. When operating with a blade, make sure the handle is positioned to provide you with maxi- mum protection from contacting the blade. Keep away from the rotating trimmer line or blade at all times, and never lift a moving attachment above waist-high. Wear appropriate footwear (non-skid boots or shoes): do not wear open- toed shoes or sandals. Never work barefooted! Keep a proper footing and do not overreach. Maintain your balance at all times during opera- tion. Always make sure the appropriate cutting attachment shield is correctly installed and in good condition.5 Safety Labels IMPORTANT! Safety and Operation Information Labels: Make sure all informa- tion labels are undamaged and readable. Immediately replace damaged or missing information labels. New labels are available from your local authorized Shindaiwa dealer. Checking Unit Condition WARNING! A cutting attachment shield or other protective device is no guarantee of protection against ricochet. YOU MUST ALWAYS GUARD AGAINST FLYING DEBRIS! Use only authorized Shindaiwa parts and accessories with your Shindaiwa brushcutter. Do not make modi¿ cations to this unit without the written approval of YAMABIKO corporation. NEVER operate the unit with the cutting attachment shield or other protective devices (harness, ignition switch, blade retention clip, etc.) removed! ALWAYS make sure the cutting attachment is properly installed and ¿ rmly tightened before operation. NEVER use a cracked or warped cutting attachment: If a prop- erly installed attachment vibrates, replace the attachment with a new one and re-check. ALWAYS stop the engine immediately and check for damage if you strike a foreign object or if the unit becomes tangled. Do not operate with broken or damaged equipment. NEVER allow the engine to run at high RPM without a load. Do- ing so could damage the engine. NEVER operate a unit with worn or damaged fasteners or at- tachment holders. NEVER cut with a dull blade. Doing so will increase the risk of blade thrust and may also cause equipment damage.6 Speci¿ cations Unit Description Using the accompanying illustrations as a guide, familiarize yourself with this unit and its various components. Under- standing the product helps ensure top performance, long service life, and safer operation. WARNING! Do not make unauthorized modi¿ ca- tions or alterations to any of these units or their components. Model Name ...............................................................................................................................................................B450/EC1 Engine Model...............................................................................................................................................................S450EC1 Engine Type ............................................................................................................................2-cycle, vertical cylinder, air cooled Displacement ................................................................................................................................................................41.5 cm

• Sound Pressure Level: In accordance with EN ISO 11806 and ISO 7917 ** Sound Power Level In accordance with EN ISO 11806 and ISO 10884 *** Vibration Level: In accordance with EN ISO 11806 and ISO 7916 Note 1: 8-tooth blade equipped. Note 2: Trimmer head equipped. Outer Tube Handlebar Cutting Attachment Shield Throttle Trigger Gearcase Tank Guard Ignition Switch Fuel Tank Spark Plug Air Filter Shoulder Harness7 Prior to Assembly Before assembling, make sure you have all the components required for a com- plete unit: ■ Engine assembly ■ Outer tube assembly ■ Cutting attachment shield ■ Cutting attachment ■ Handlebar ■ Kit containing cutting attachment shield mounting bracket and hardware, op- erator’s handle mounting bracket and hardware, gearcase tool holder, this manual and tool kit for routine mainte- nance. Tool kits vary by model and may include a hex wrench, spanner and a combination spark plug wrench/screw- driver. Carefully inspect all components for dam- age. ENGINE ASSEMBLY Assembly Procedure HARNESS Assembly of the Outer Tube (4) Loosen the stopper bolt of the throttle grip. Remove the stopper bolt and nut. (5) Fully loosen the clamp bolt of the throttle grip. (6) Slip the right-side handlebar into the throttle grip. Locate the throttle grip so that the stopper bolt can pass through the stopper hole. Securely tighten the stopper bolt and nut. (7) Securely tighten the clamp bolt. (1) Loosen the 2 joint bolts fully and slip the outer tube into the joint until the tube bottoms (up to the insert label). The outer tube or gearcase shaft may have to be rotated slightly for the splines on the mainshaft to fully engage the engine. (2) Attach the ground wire to the joint bolt. (3) Tighten the 2 joint bolts securely. GROUND WIRE JOINT BOLT INSERT LABEL IMPORTANT! The terms “left”, “left-hand”, and “LH”; “right”, “right-hand”, and “RH”; “front” and “rear” refer to directions as viewed by the operator during normal operation. Assembling the Outer Tube8 Throttle Cable Adjustment (1) Pull the throttle trigger gently, and check for free-play of approximately 5mm. (2) If free-play is out of speci¿ cations: (a) Slide the cable cap toward the mufÀ er side until the adjusting nut and the lock nut appear. (b) Loosen the lock nut slightly. (c) Turn the adjusting nut so that free-play is about 5mm. (d) Then, tighten the lock nut. (e) Slide the cable cap back. (1) Loosen the two bolts of the lower cap and remove the lower cap. (2) Position the handle bracket against the handle label located on the outer tube. (3) Attach the lower cap with the two bolts and tighten the bolts. Make sure the front handle is in position per the illustration. (4) Secure the cable to the outer pipe with the two bands as the illustration shows. The two bands are in the tool bag. BAND

HANDLEBARHANDLE BRACKETHANDLE LABELLOWER CAP

BOLT THROTTLE GRIP LOCK NUT ADJUSTING NUT CABLE CAP THROTTLE CABLE Assembly of the Handle9 Cutting Attachment Shield Assembly WARNING! NEVER operate this machine without the cutting attachment shield. Operating without the cutting attachment shield may result in seri- ous injury. (A) Cutting Attachment Shield (1) Insert the cutting attachment shield between the outer tube and the lower clamp. Loosen the nut and bolt which are tightening the lower clamp if the cutting attachment shield does not ¿ t with the lower clamp. NOTE: It may be necessary to loosen the lower clamp bolt so that the shield will ¿ t between the tube and clamp. (2) The upper clamp over the outer pipe and tighten with four bolts. NOTE: Tighten four bolts a crisscross fashion. (3) Tighten the lower clamp bolt and nut securely. WARNING! Carefully inspect the cutting attachment shield assembly to make sure it is tightened securely and does not wobble. (B) Shield Extension (when trimmer head is in use) (Consult your dealer.) (1) Attach the shield extension to the cut- ting attachment shield. (2) Be sure to tighten the bolt. CAUTION! The line cutter is attached to the shield extension and must be used when op- erating with a trimmer head. NOTE: Make sure the shield extension is complete- ly hooked at the hook receiver. LOWER CLAMP BOLT NUT BOLT UPPER CLAMP OUTER TUBE CUTTING ATTACHMENT SHIELD

CUTTING ATTACHMENT SHIELD

SHIELD EXTENTION HOOK BOLT HOOK RECEIVER10 Installing a Blade (1) Make sure the switch is off and the engine is stopped. (2) Wear gloves to protect your hands. (3) Turn the unit over so the saw holder À ange extending from the gear case is facing up. (4) Using the small end of the plug wrench, loosen the bolt (turn clockwise) and remove the bolt, bolt guard, and holder B. (5) Slide the safety clip as shown in the illustration. WARNING! Before operating, make sure the blade is securely mounted. Turn the blade with your hand slightly and make sure the blade turns smoothly without wobbling. WARNING! The blade must ¿ t À at. Make sure the direction of the arrow indicated on the blade corresponds with the arrow indicated on the cutting attachment shield. (7) Put holder B and bolt guard back and at this time only ¿ nger tighten the bolt. Make sure holder B is À at against the blade and the recess in holder B must face the blade and completely cover the safety clip. (8) Rotate holder A until the hole in its skirt aligns with the hole in the gear case. Insert the hex wrench through both holes (to prevent the shaft from turning). (9) Holding the hex wrench and blade with one hand, tighten the bolt (turn counterclockwise) securely using the hex socket end of the plug wrench. (10) Remove the hex wrench. WARNING! Never operate this machine without the safety clip in place. (6) Fit the blade over the safety clip onto holder A. Then, slide the safety clip back to its original position. WARNING! The blade must ¿ t À at against holder A. The blade’s mounting hole must be centered over the raised boss of holder A. SHAFT BOLT BOLT GUARD HOLDER B SAFETY CLIPS HOLDER A GEAR SHAFT SAFETY CLIP SAFETY CLIP HOLDER A BLADE11 Mixing Fuel Filling The Fuel Tank

1. Place the unit on a À at, level surface,

and wipe any debris from around the fuel cap.

2. Remove the fuel cap.

3. Fill the tank with clean, fresh fuel.

It is not permitted to ¿ ll fuel above the shoulder level of fuel tank. WARNING! Minimize the risk of ¿ re, burns, and personal injury! ■ STOP engine before refueling. ■ ALWAYS allow the engine to cool before refueling ■ ALWAYS open the fuel cap slowly to allow any pressure build-up in the tank to release fuel vapor slowly. ■ ALWAYS transport and store fuels in an approved container. ■ Avoid over¿ lling and wipe-up all spilled fuel. Move the engine at least 3 meters from the fueling point, storage area, and other readily À ammable materials before restarting. ■ ALWAYS inspect the unit for fuel leaks before each use. During each re¿ ll, make sure there are no fuel leaks around the fuel cap and/ or tank. If a fuel leak is evident, stop using the unit immediately. Fuel leaks must be repaired before using the unit. ■ NEVER smoke or light any ¿ res near the engine or fuel source. ■ NEVER place any À ammable ma- terial near the engine or mufÀ er. ■ NEVER operate the engine without the mufÀ er in good working condi- tion. ■ ALWAYS move the unit to a place well away from a fuel storage area or other readily À ammable materi- als before starting the engine. IMPORTANT! Mix only enough fuel for your immediate needs! If fuel must be stored longer than 30-days, it should ¿ rst be treated with a stabilizer such as StaBil™ or equivalent product! CAUTION! Some gasolines contain alcohol as an oxygenate! Oxygenated fuels may cause increased operating tem- peratures. Under certain conditions, alcohol-based fuels may also reduce the lubricating qualities of some mixing oils. Never use any fuel containing more than 10% alcohol by volume! Generic oils and some outboard motor oils may not be intended for use in high-performance air cooled 2-cycle engines, and should never be used in your Shindaiwa engine! CAUTION! This engine is designed to operate on a 50:1 mixture consisting of unleaded gasoline and a premium 2-cycle mixing oil only. Use of Non-approved mixing oils can lead to excessive maintenance costs and/or engine damage. CAUTION! Never attempt to mix fuel in the unit’s fuel tank. Always mix all fuels in a clean approved container. ■ Use only fresh, clean unleaded gasoline with a pump octane rating of 87 or higher. ■ Mixing fuel with a Premium 2-cycle mixing oil designed for use with high-performance 2-cycle air-cooled engines. ■ Refer to the following examples of 50:1 fuel to oil mix quantaties: Gasoline 2-cycle mixing oil liters milliliters

4. Replace the cap, and wipe away

any spilled fuel before starting the engine.12 WARNING!

IS WELL CLEAR OF ANY

INTERFERENCE. Before starting the engine, place unit on clear, level surface. Make sure you have good secure footing and always keep a ¿ rm grip on the machine. THE CUTTING

ATTACHMENT MAY ROTATE WHEN

THE ENGINE STARTS. Starting the Engine WARNING! Move at least three meters away from the fuel site before starting the engine. WARNING! Never operate the engine without the cutting attach- ment installed. Starting a Cold Engine and/or Re- starting After Refueling. (a) Slide the ON-OFF switch to the “I” position. (b) Prime the engine by repeatedly depressing the carburetor primer bulb until fuel can be seen À owing through the transparent overÀ ow return tube: (c) Push the choke lever upward (“ closed“ position). (Cold engine.) (d) Depressing the lock lever, pull the throttle lever fully and depress the throttle lock button. While depressing the throttle lock button, release the throttle lever and the lock lever. Now the throttle stays at high idle (starting speed). (e) While ¿ rmly holding the outer tube with one hand, pull the recoil starter handle upward with your other hand. Pull slowly at ¿ rst until you feel the starter en- gage, then pull quickly to start the engine. Do not pull the starter rope to the end of its travel. CAUTION! Pulling the starter rope to the end of its travel may damage the starter mechanism. IMPORTANT! Repeated cranking of the engine with the choke CLOSED (“ “) will lead to engine À ooding. If the engine fails to start after several attempts, move the choke lever to the OPEN position and continue cranking. (f) When the engine ¿ rst ¿ res, gradually return the choke to OPEN (“ ”) position if you have not already done so.

• If the engine stops before the choke is fully open, restart with the choke closed.

• If the engine stops after the initial ¿ ring, restart with choke closed. (g) When the engine starts and is run- ning, set the engine to idle by tapping the throttle lever to release the throttle lock. WARNING! Never start the engine from the operating position. Starting a Warm Engine Starting a warm engine involves all of the steps of starting a cold engine. EXCEPT:

• The choke should be in the OPEN posi- tion. If the engine does not start, follow the cold engine starting procedure. When the engine starts:

• After the engine starts, disengage the throttle lock and allow the engine to warm-up at idle for 2 or 3 minutes before operating the machine.

• After the engine is warm, pick up the machine and clip-on the strap.

• Advancing the throttle makes the cutting attachment rotate faster; releasing the throttle makes the attachment stop run- ning. If the cutting attachment continues to rotate, carburetor idle speed should be adjusted. (See next page.) OVERFLOW PIPE Make sure the cutting attachment is clear of obstructions. OVERFLOW TUBE ON-OFF SWITCH THROTTLE LEVER LOCK LEVER THROTTLE LOCK BUTTON13 Stopping the Engine Idle the engine brieÀ y before stopping, then slide the ON-OFF switch to the “O” (for STOP) position. WARNING! The cutting attachment con- tinues rotating for a while after the switch is turned off. WARNING! The cutting attachment must NEVER rotate at engine idle! If the idle speed can not be adjusted by the procedure described here, have the unit inspected at an authorized Shindaiwa dealer. The engine must return to idle speed whenever the throttle lever is released. Idle speed is adjustable, and must be set low enough to permit the engine clutch to disengage the cutting attachment when the throttle is released. Engine Idle Adjustment NOTE: Carburetor fuel mixture adjustments are preset at the factory on units with emis- sion control systems and cannot be serviced in the ¿ eld. (3) If a tachometer is available, the engine idle speed should be adjusted to 2,750 min

(rpm) (1) Place the unit on the ground, then start the engine and allow it to idle for 2-3 minutes until warm. (2) If the attachment rotates when the engine is at idle, reduce the idle speed by turning the idle adjustment screw coun- terclockwise. To Wear the Strap Shoulder Strap/Harness (1) Attach the strap hook to the hanger on the outer pipe. (2) Wear the strap so that the hook stays at your right side. (3) Adjust the length of the strap so that you can hold and operate the machine comfortably. (4) Make sure the hip pad stays between your hip and outer pipe. Emergency Release In case of emergency, ¿ rmly pull the white tab at the hook. The machine will release from the strap. Idle Adjust Screw IMPORTANT! Adjust the shoulder strap so the shoulder pad rests comfortably on the off-side shoulder and the cutting path of the cutting attachements is parallel to the ground. Make sure all hooks and adjustment devices are secure. WARNING! Always wear a harness when operating this unit with a blade. NOTE: Using a harness with a bruscutter allows you to maintain proper control of the unit and reduces fatigue during extended operation. Double Shoulder Harness Adjust the double shoulder harness straps so the shoulder pads rest comfortably on the offside of the shoulder and the cutting path of the blade is parallel to the ground. Make sure all hooks and adjusting devices are secure. ON-OFF SWITCH14 CAUTION! To prevent possible engine damage, do not allow the machine to run at high speeds without a load. Avoid operating the engine at low speeds. Doing so can lead to rapid clutch wear. In addition, slow-speed operation tends to cause grass and debris to wrap around the cutting attachment. Operation WARNING! “BLADE THRUST” is a sudden sideway or backward motion of the machine. Such motion may occur when the blade jams or catches on an object such as a sapling tree or tree stump. BE CONSTANTLY ALERT

FOR BLADE THRUST AND GUARD

AGAINST ITS EFFECTS. WARNING! Position the blade so cuts are made between blade’s 8 o’clock and 10 o’clock positions (as viewed from above). DO NOT cut between the 11 o’clock and 5 o’clock positions. CAUTION! DO NOT use 2-tooth blades with this machine. (1) After starting the engine, pull the throttle lever gradually. The engine speed increases and the blade will start rotating. (2) When the throttle lever is released, the engine goes back to idle speed automatically. (3) Operate the machine at full throttle while cutting. Best fuel ef¿ ciency is obtained by releasing the throttle when swinging back after cut. (4) The blade rotates counterclockwise. For best performance and to minimize being stuck by debris, move the blade from right to left while advancing on your work. WARNING! NEVER strike or slam the spinning blade against the wood. WARNING! When transporting, make sure the engine is not running and blade is covered with blade cover. Recommended Cutting Attachments Make sure to use the following recom- mended Shindaiwa cutting attachment with this machine. Blades

PART NUMBER X405-000151

4-TOOTH BLADE INNER BORE: 25.4mm DIAMETER: 255.0mm THICKNESS: 2.2mm Trimmer Heads

PART NUMBER 78820-14000

Maintenance WARNING! Before performing any main- tenance, repair, or cleaning work on the machine, make sure the engine and cutting attachment are completely stopped. Disconnect the spark plug wire before performing service or maintenance work. WARNING! Never repair a damaged blade by welding, straighten- ing, or by modifying its shape. An altered blade may break during op- eration, resulting in serious personal injury. Prior to each work day, perform the following: ■ Remove the dirt and debris from the engine, check the cooling ¿ ns and air cleaner for clogging, and clean them as necessary. ■ Carefully remove any accumulations of dirt or debris from the mufÀ er and fuel tank. Dirt buildup in these areas can lead to engine overheating, ¿ re, or premature wear. ■ Check for loose or missing screws or components. Make sure the cutting attachment is securely fastened. ■ Check the machine for leaking fuel or grease. Daily Maintenance You may install one of several types of Shindaiwa trimmer heads on your B450 brushcutter, each with features for speci¿ c applications and/or operational require- ments. For proper operation, always refer to the instructions accompanying the trimmer head being used. Available trimmer head styles include: ■ Semi-automatic. Trimmer line is indexed when the operator taps the trimmer head on the ground during operation. ■ Manual. The operator indexes line manually with the grass trimmer stopped. ■ Fixed. The operator must stop the unit and add new lengths of trimmer line manually. ■ Flail. This device, designed for clearing weeds and light brush, features three nylon blades attached to the head by pivots. CAUTION! Do not push the rotating line into trees, wire fences or any material that could tangle or break line ends. Using a Brushcutter With a Trimmer Head CAUTION! Operation at low rpm can lead to pre- mature clutch failure. Trimming and Mowing Grass Hold the grass trimmer so the trimmer head is angled slightly into the area to be cut. To ensure maximum trimmer-line service life, cut only with the tip of the trim- mer line. Cut grass by swinging the unit's trimmer head from left to right. Keep the trimmer head horizontal. Engine Operating Speeds Operate at full throttle while cutting grass. CUTTING PATH RETURN PATH Edging Tilt the handle about 100° to the left (from horizontal) and move forward, holding the trimmer or brushcutter vertically as shown.16 10 Hour Maintenance CAUTION! Do not operate the machine if the air cleaner or element is damaged, or if the element is water-soaked. Remove the air cleaner element from the carburetor and clean it thoroughly with soap and water. Squeeze out excess, let dry and reassemble the element. 10/15 Hour Maintenance CAUTION! Before removing the spark plug, clean the area around the plug to prevent dirt and dust from getting into the engine’s internal parts. Remove and clean the spark plug. Adjust the spark plug electrode gap to 0.6 - 0.7mm. If the plug must be replaced, use only NGK BMR6A. 50 Hour Maintenance Cleaning Remove and clean the cylinder cover and clean grass and dirt from the cylinder ¿ ns. Remove the cutting attachment and the gear shaft collar, and press new grease into the gear case until the old grease has been pushed out. Use only lithium base grease (such as Shindaiwa Gear Case Lubricant). Use a hooked wire to extract the fuel ¿ lter from inside the fuel tank. Remove and replace the ¿ lter element. Be- fore reinstalling the ¿ lter, inspect the condition of the fuel line. If damage or deterioration are noted, the unit should be removed from service until you can consult with an authorized servicing dealer. Hooked Wire CAUTION! Make sure you do not pierce the fuel line with the end of the hooked wire. The line is delicate and can be dam- aged easily. MufÀ er Maintenance Fuel Filter Maintenance If carbon deposits are severe or if no performance improvement is noted, your unit should be returned to your Shindaiwa dealer for inspection. WARNING! Never operate this unit with a damaged or missing mufÀ er! Operat- ing with missing or damaged exhaust components is a ¿ re hazard and may also damage your hearing.

CLEANER ELEMENTCLEANERCOVERLOOSEN SCREW TO REMOVE

New Grease Old Grease Gear Shaft Collar IMPORTANT! Do not remove the muffler cover.If necessary,Please consult your dealer.17 Long Term Storage Whenever the unit will not be used for 30 days or longer, use the following procedures to prepare it for storage: ■ Clean external parts thoroughly and apply a light coating of oil to all metal surfaces. ■ Drain all the fuel from the fuel tank. IMPORTANT! All stored fuels should be stabilized with a fuel stabilizer such as STA-BIL™. To remove the remaining fuel from the fuel lines and carburetor and with the fuel drained from the fuel tank.

2. Start and run the engine until stops

3. Repeat steps 1 and 2 until the engine

will no longer start. CAUTION! Gasoline stored in the carburetor for extended periods can cause hard starting, and could also lead to increased service and maintenance costs. ■ Remove the spark plug and pour about 7 grams of 2-cycle mixing oil into the cylinder through the spark plug hole. Slowly pull the recoil starter 2 or 3 times so oil will evenly coat the interior of the engine. Reinstall the spark plug. ■ Before storing the unit, repair or replace any worn or damaged parts. ■ Remove the air cleaner element from the carburetor and clean it thoroughly with soap and water. Let dry and reassemble the element. ■ Store the unit in a clean, dust-free area. Blade Sharpening WARNING! Sharpen only the cutting teeth of a blade. DO NOT alter the contour of the blade in any way. In order to keep the blade in balance, all cutting edges must be sharpened equally. DO NOT ¿ le the tips of the teeth too sharp. With the ¿ le or a grinder, ¿ le a blade as follows. The bottom of each tooth must remain unsharpened. (Blade as viewed from bottom) 4-Tooth Blade 8-Tooth Blade Make sure the width of the 3 sides/ 4 sides is all the same. The sharpening angle should be 45° approx. Do not ¿ le the tips of the blade too sharp. Leave 0.2~0.5mm unsharpened.18 Does the engine crank? Faulty recoil starter. Fluid in the crankcase. Internal damage. Consult with an authorized servicing dealer. Consult with an authorized servicing dealer. Consult with an authorized servicing dealer.

Good compression? Loose spark plug. Excess wear on cylinder, piston, rings. Tighten and re-test.

YES Does the tank contain fresh fuel of the proper grade? Refill with clean fresh unleaded gasoline with a pump octane of 87 or higher, mixed with Premium 2-cycle mixing oil at a 50:1 gasoline/oil ratio. Fuel incorrect, stale, or contaminated; mixture incorrect.

YES Is fuel visible and moving in the return line when priming? Check for clogged fuel filter and/or vent. Replace fuel filter or vent as required. Restart.

Is there spark at the spark plug wire terminal? The ignition switch is in “O” (OFF) position. Shorted ignition ground. Faulty ignition unit. Move switch to “I” (ON) position and re-start.

YES YES Check the spark plug. If the plug is wet, excess fuel may be in the cylinder. The plug is fouled or improperly gapped. The plug is damaged internally or of the wrong size. Crank the engine with the plug removed, replace the plug, and re-start. Clean and re-gap the plug to

0.6 ~ 0.7 mm. Re-start.

Replace the plug with a NGK BMR6A. Re-start. YES What To Check Possible Cause Remedy Troubleshooting Guide Engine Does Not Start Manufacturer YAMABIKO CORPORATION 7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN Authorized Representative in Europe Atlantic Bridge Limited Atlantic House, PO Box 4800, Earley, Reading RG5 4GB, United Kingdom19 Low Power Output Troubleshooting Guide (Continued) Is the engine overheating? Operator is overworking the unit. Carburetor mixture is too lean. Improper fuel ratio. Fan, fan cover, cylinder fins dirty or damaged. Carbon deposits on the piston or in the muffler. Cut at a slower rate. Consult with an authorized servicing dealer. Refill with clean fresh unleaded gasoline with a pump octane of 87 or higher, mixed with Premium 2-cycle mixing oil at a 50:1 gasoline/oil ratio. Clean, repair or replace as necessary. Consult with an authorized servicing dealer. What To Check Possible Cause Remedy Engine is rough at all speeds. May also have black smoke and/or unburned fuel at the exhaust. Clogged air cleaner element. Loose or damaged spark plug. Air leakage or clogged fuel line. Water in the fuel. Piston seizure. Faulty carburetor and/ or diaphragm. Clean or replace the air filter. Tighten or replace the plug with a NGK BMR6A. Re-start. Repair or replace fuel filter and/or fuel line. Refill with fresh fuel/oil mixture. Consult with an authorized servicing dealer. Consult with an authorized servicing dealer. Engine is knocking. Overheating condition. Improper fuel. Carbon deposits in the combustion chamber. See above. Check fuel octane rating; check for presence of alcohol in the fuel. Refuel as necessary. Consult with an authorized servicing dealer.20 Inspect and replace attachment as required. Tighten gearcase securely. Inspect and replace as necessary. Poor acceleration. Clogged air filter. Clogged fuel filter. Lean fuel/air mixture. Idle speed set too low. Clean or replace the air filter. Replace the fuel filter. Consult with an authorized servicing dealer. Adjust: 2,750 min

Symptom Possible Cause Remedy Engine stops abruptly. Switch turned off. Fuel tank empty. Clogged fuel filter. Water in the fuel.

Shorted spark plug or loose terminal. Ignition failure. Piston seizure. Reset the switch and re-start. Refuel. See page 11. Replace fuel filter. Drain; replace with clean fuel. See page 11. Clean or replace spark plug with a NGK BMR6A. Tighten the terminal. Replace the ignition unit. Consult with an authorized servicing dealer. Engine difficult to shut off. Ground (stop) wire is disconnected, or switch is defective. Overheating due to incorrect spark plug. Overheated engine. Test and replace as required.

Replace spark plug with a NGK BMR6A.

Idle engine until cool. Cutting attachment moves at engine idle. Engine idle too high. Broken clutch spring or worn clutch spring boss. Loose attachment holder.

Replace spring/shoes as required, check idle speed. Inspect and re-tighten holders securely.

Excessive vibration Warped or damaged attachment. Loose gearcase. Bent main shaft/worn or damaged bushings. Attachment will not rotate Shaft not installed in powerhead or gearcase. Broken shaft.

Damaged gearcase. Inspect and reinstall as required.

Consult with an authorized servicing dealer. Consult with an authorized servicing dealer.

Additional Problems Troubleshooting Guide (Continued)21 Declaration of Conformity The undersigned manufacturer: YAMABIKO CORPORATION

JAPAN This declaration of conformity is issued under the sole responsibility of the manufacturer. declares that the hereunder specifi ed new unit: BRUSHCUTTER Brand: shindaiwa Type: B450 complies with:

• the requirements of Directive 2006/42/EC (use of harmonized standard EN ISO 11806-1: 2011)

• the requirements of Directive 2004/108/EC until 19th April 2016 (use of harmonized standard EN ISO 14982: 2009) and 2014/30/EU from 20th April 2016 (use of harmonized standard EN ISO 14982: 2009)

• the requirements of Directive 2000/14/EC Conformity assessment procedure followed ANNEX V Measured sound power level : 115dB(A)

36000001 and up Tokyo, January 1st, 2016 Masayuki Kimura General Manager Quality Assurance Dept. YAMABIKO CORPORATION The authorized Representative in Europe who is authorized to compile the technical fi le. Company: Atlantic Bridge Limited Address: Atlantic House, PO Box 4800, Earley, Reading RG5 4GB, UK Mr. Philip Wicks22 MEMORANDUM23 MEMORANDUM7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN PHONE: 81-428-32-6118. FAX: 81-428-32-6145. © 2013 Printed in Japan X750-027 091

ALESAGGIO INTERNO: 25,4 mm DIAMETRO: 255,0 mm SPESSORE: 2,0 mm

ALESAGGIO INTERNO: 25,4 mm DIAMETRO: 255,0 mm SPESSORE: 3,0 mm