BMT 24 - Grass trimmer EINHELL - Free user manual and instructions

USER MANUAL BMT 24 EINHELL

Operating Instructions Gas String Trimmers

devices. Unit is designed for line trimmer use only. Use of any other accessories or attachments will increase the risk of injury.

WARNING: Keep children, bystanders, and

animals 50 feet (15 meters) away. If approached stop unit immediately.

1. Wear close fitting, tough work clothing that

will provide protection, such as long slacks or trousers, safety work shoes, heavy duty work gloves, hard hat, a safety face shield, or safety glasses for eye protection and a good grade of ear plugs or other sound barriers for hearing protection.

2. Store in a safe place. Open fuel cap slowly to

release any pressure which may have formed in fuel tank. To prevent a fire hazard, move at least 10 feet (3 meters) from fueling area before starting.

3. Turn unit off before setting it down.

4. Always hold unit firmly with both hands, the

thumb and fingers encircling the handles.

5. Keep all screws and fasteners tight. Never

operate your equipment when it is improperly adjusted or not completely and securely assembled.

6. Keep handles dry, clean and free of fuel

7. Keep stringhead as close to ground as

practical. Avoid hitting small objects with stringhead. When cutting on a slope, stand below stringhead. NEVER cut or trim on a hill or slope, etc. if there is the slightest chance of slipping, sliding or losing firm footing.

8. Check area you will be trimming for debris

that may be struck or thrown during operation.

9. Keep all parts of your body and clothing

away from stringhead when starting or running engine. Before starting engine, make sure stringhead will not come in contact with any obstacle.

10. Stop engine before examining cutting line.

11. Store equipment away from possible

flammable materials, such as gas-powered water heaters, clothes dryers, or oil-fired furnaces, portable heaters, etc.

12. Always keep the debris shield, stringhead, and

engine free of debris build-up.

13. Operation of equipment should always be

restricted to mature and properly instructed individuals.

1. DO NOT USE ANY OTHER FUEL than that

recommended in your manual. Always follow instructions in the Fuel and Lubrication section of this manual. Never use gasoline unless it is properly mixed with 2-cycle engine lubricant. Permanent damage to engine will result, voiding manufacturer’s warranty.

2. DO NOT SMOKE while refueling or operating

MUFFLER and properly installed muffler shield.

4. DO NOT TOUCH or let your hands or body come

in contact with the muffler. Hold unit with thumbs and fingers encircling the handles.

5. DO NOT OPERATE UNIT IN AWKWARD

POSITIONS, off balance, outstretched arms, or one-handed. Always use two hands when operating unit with thumbs and fingers encircling the handles.

6. DO NOT RAISE STRINGHEAD above ground

level while unit is operating. Injury to operator could result.

7. DO NOT USE UNIT FOR ANY PURPOSES

OTHER than trimming lawn or garden areas.

8. DO NOT OPERATE UNIT FOR PROLONGED

PERIODS. Rest periodically.

COMPONENTS OF THIS PRODUCT. Doing so could cause personal injury and/or damage the unit voiding the manufacturer’s warranty.

12. DO NOT operate your unit near or around

flammable liquids or gases whether in or out of doors. An explosion and/or fire may result. General identification

17. COUPLING (MTK 24 only)

*Supplied in User Kit NOTE: DO NOT use blades on these models. SAFETY FEATURES 3 DEBRIS SHIELD must be installed to prevent debris from being thrown at the operator and prevent the string from extending longer than necessary. 14 MUFFLER SHIELD helps prevent hands, body and/or combustible materials from making contact with a hot muffler.

Specifications BMT 24 MTK 24 Engine Type Air-cooled, 2-Cycle, Chrome Cylinder Air-cooled, 2-Cycle, Chrome Cylinder Displacement 24 cm

• Handle Assembly NOTE: The Handle is attached to the shaft but has beened turned under for ease of packing.

1. Loosen adjustment knob and rotate handle to top

of shaft. Position handle 160mm - 220mm from throttle (Fig. 1b).

2. Tighten adjustment knob securely.

• DEBRIS SHIELD (Fig. 2A - 2B)

Warning: The debris shield must be installed to

properly dispense cutter line and protect operator. Shield fits snug on shaft. Some force may be required.

3. Insert bolt (E) and nut (F), tighten securely.

• Drive shaft (MTK 24 only) Installing the lower shaft

1. Remove the hanger from the lower shaft (A).

Press the release lever (B) while pushing the lower shaft into the tool-link couping. (Fig. 3A)

2. Locate and lock the release lever into the primary

hole (C) in the shaft. (Fig. 3A) CAUTION: Make sure the release lever is locked in the primary hole and knob is securely tightened before operating this unit.

3. Tighten the knob (D) securely clockwise before

using the unit. (Fig. 3B) CAUTION: If the incorrect hole is used, it could result in injury, or damage to the unit. Fuel and lubrication

• Fuel Use regular grade unleaded gasoline mixed with 2- cycle engine oil for best results. Use mixing ratios in Section FUEL MIXING TABLE.

Warning: Never use straight gasoline in your

unit. This will cause permanent engine damage and void the manufacturer’s warranty for that product. Never use a fuel mixture that has been stored for over 90 days.

Warning: Do not use any 2-cycle oil product with

a recommended mixing ratio of 100:1. If insufficient lubrication is the cause of engine damage, it voids the manufacturer’s engine warranty.

• MIXING FUEL Mix fuel 2 cycle oil in an approved container. Use mixing table for correct ratio of fuel to oil. Shake container to ensure through mix.

Warning: Lack of lubrication voids engine

warranty. Gasoline and oil must be mixed at 25:1. Anleitung_BMT24-MTK24 19.12.2002 12:31 Uhr Seite 18• Fuel Mixing Table Gasoline Lubricant 5 Liters 200 ml (cc) Mixing Procedure 25 Parts Gasoline to 1 part Lubricant 1 ml = 1 cc RECOMMENDED FUELS Some conventional gasolines are being blended with oxygenates such as alcohol or an ether compound to meet clean air standards. Your engine is designed to operate satisfactorily on any gasoline intended for automotive use including oxygenated gasolines. OPERATING INSTRUCTIONS

• STARTING A COLD ENGINE NOTE: To minimize load on engine during starting and warm-up, trim excess cutter line to 5" (13cm) (Fig. 5A).

1. Move ignition switch to the “RUN (I)” position (Fig.

2. Your unit is designed with a 3 position choke:

4. Grip handle firmly – depress safety trigger (B) &

throttle trigger (C) to the FULL THROTTLE position (Fig. 5E).

5. Pull starter rope out a short way until resistance

is felt (approximately 100mm) (Fig. 5F). A smooth rapid pull is required for a strong spark. Pull starter rope briskly 4 times.

7. Pull starter rope again 4 times while trigger is in

the full throttle position (Fig. 5F)

8. Once engine starts, leave in the PARTIAL “ ”

position for 10 seconds.

9. Move the choke to RUN “ ” position (Fig. 5H).

10. If engine fails to start, repeat steps 1 through 7.

NOTE: If engine fails to start after repeated attempts, refer to Troubleshooting section. NOTE: Always pull starter rope straight out. Pulling starter at an angle will cause rope to rub against the eyelet. This friction will cause the rope to fray and wear more quickly. Always hold starter handle when rope retracts. Never allow rope to snap back from extended position. This could cause rope to snag or fray and also damage the starter assembly.

1. Place trimmer on firm flat surface.

2. Move ignition switch to the “RUN (I)” position (Fig.

3. Grip handle firmly, squeeze throttle trigger to

4. Pull starter rope briskly until engine starts, but no

5. If engine does not start, please operate

“STARTING A COLD ENGINE” again.

• TO STOP ENGINE Release throttle trigger. Let engine return to idle. Push and hold ignition stop switch until engine stops (Fig. 6). Trimming Instructions

• ADDITIONAL SAFETY PRECAUTIONS Before operating your unit, review ALL SAFETY PRECAUTIONS in this manual. WARNING / CAUTION

• IF UNFAMILIAR WITH TRIMMING techniques, practice the procedures with ENGINE in “OFF” position.

• ALWAYS CLEAR WORK area of debris such as cans, bottles, rocks, etc. Striking objects can cause serious injury to operator or bystanders and also damage equipment. If an object is accidentally hit, immediately TURN ENGINE OFF and examine equipment. Never operate unit with damaged or defective equipment.

• ALWAYS TRIM OR CUT AT HIGH ENGINE SPEEDS. Do not run engine slowly at start or during trimming operations.

• DO NOT use equipment for purposes other than trimming or mowing weeds.

• NEVER raise stringhead above knee height during operation.

• DO NOT operate unit with other people or animals in the immediate vicinity. Allow a minimum of 50 feet (15 meters) between operator and other people and animals when trimming or mowing. Allow a distance of 100 feet (30 meters) between

• IF OPERATING UNIT ON A SLOPE, stand below the cutting attachment. DO NOT OPERATE on a slope or hilly incline if there is the slightest chance of slipping or losing your footing.

coated steel wire of any kind with your stringhead. Serious operator injury can result. To release fresh line, run engine at full throttle and “bump” stringhead against lawn. Line will automatically release. The knife in debris shield will trim excess line (Fig. 7A). CAUTION: Periodically remove weed wrap to prevent overheating the drive shaft. Weed wrap occurs when strands of weed become entangled around the shaft beneath the debris shield (Fig. 7B). This condition prevents the shaft from being properly cooled. Remove weed wrap with screwdriver or similar device.

• TRIMMING PROCEDURES When properly equipped with a debris shield and stringhead, your unit will trim unsightly weeds and tall grass in those hard-to-reach areas - along fences, walls, foundations and around trees. It can also be used for scalping to remove vegetation down to the ground for easier preparation of a garden or to clean out a particular area. NOTE: Even with care, trimming around foundations, brick or stone walls, curves, etc., will result in above normal string wear. TRIMMING / MOWING Swing trimmer with a sickle-like motion from side to side. Do not tilt the stringhead during the procedure. Test area to be trimmed for proper cutting height. Keep stringhead at same level for even depth of cut (Fig. 8A). CLOSER TRIMMING Position trimmer straight ahead with a slight tilt so bottom of stringhead is above ground level and string contact occurs at proper cutting point. Always cut away from operator. Do not pull trimmer in toward operator.

FENCE / FOUNDATION TRIMMING

Approach trimming around chain link fences, picket fences, rock walls and foundations slowly to cut close without whipping string against the barrier. If the string comes in contact with rock, brick walls, or foundations, it will break or fray. If string snags fencing, it will snap off.

TRIMMING AROUND TREES

Trim around tree trunks with a slow approach so string does not contact bark. Walk around the tree trimming from left to right. Approach grass or weeds with the tip of the string and tilt stringhead slightly forward.

WARNING: Use extreme caution when

SCALPING. Keep a distance of 100 feet (30 meters) between operator, other people and animals during these operations. SCALPING Scalping refers to removal of all vegetation down to the ground. To do this, tilt the stringhead to about a 30 degree angle to the left. By adjusting the handle you will have better control during this operation. Do not attempt this procedure if there is any chance flying debris could injure operator, other people or cause damage to property. (Fig. 8B) EDGING FUNCTION: (MTK 24 only)

1. Loosen knob (B) by turning counter clockwise

2. Push down release lever (A) and twist shaft to

desired position (Fig. 8C). Edging holes positioned at 90 degrees left, 90 degress right and 180 degrees.

3. Lock lower shaft in desired edging hole with

4. Tighten knob (B)securely before use by turning

1. Turn knob (A) COUNTERCLOCKWISE and

remove (Fig. 9A). User knob spanner supplied.

2. Remove spool (B) and spring (C) from spindle (D).

3. Remove any remaining cutter line (H).

4. Double a 14' (4.3m) length of .080" (2mm) cutter

line. Place the looped center in one of the slots of the spool divider (Fig. 9B).

5. Wind cutter line clockwise as shown in illustration

(Fig. 9C), keeping tension, with each half separated by the spool divider. Wind to within 6" (15cm) of the ends.

6. Lock each end of line (H) into a slot (F) on

opposite sides of the spool (Fig. 9D).

7. Install the spring (C) over the spindle (D). Insert

each end of the line through an eyelet (G) in the housing (E) (Fig. 9E).

8. Lower the spool into the housing (E) while

feeding the line through the eyelets (G). Ensure the spring seats itself into the spool (Fig. 9E).

9. Once the spool is in place, apply pressure on the

spool compressing the spring. Pull each end of the line (H) sharply to unlock the line from the slots (Fig. 9F).

10. Continue to apply pressure to the spool until the

knob can be threaded CLOCKWISE onto the spindle. Tighten the knob securely by hand only (Fig. 9G).

11. Trim the excess line to approximately 5" (13cm).

This will minimize load on engine during starting and warm-up (Fig. 5A).

• AIR FILTER Caution: Remove fuel from unit and store in approved container before starting this procedure. Open fuel cap slowly to release any pressure which may have formed in fuel tank. To Clean Air Filter: (fig 11a - 11c)

1. Remove 3 screws (A) holding air filter cover in

place, pull out choke lever knob (B) remove cover (C) and lift filter (D) from air box.

2. Wash filter in soap and water. DO NOT USE

NOTE: Replace filter if frayed, torn, damaged or unable to be cleaned.

• FUEL CAP / FUEL FILTER Caution: Remove fuel from unit and store in approved container before starting this procedure. Open fuel cap slowly to release any pressure which may have formed in fuel tank. NOTE: Keep vent (A) on fuel cap clean of debris (Fig.12A).

1. Lift fuel line and filter (B) out of tank. A steel wire

(C) with a hook or a paper clip works well (Fig. 12B).

2. Pull off with a twisting motion (Fig. 12C).

3. Replace fuel filter (D).

NOTE: Never operate the trimmer without the fuel filter. Internal engine damage could result!

• CARBURETOR ADJUSTMENT The carburetor was pre-set at the factory for optimum performance. If further adjustments are necessary, please take your unit to the nearest Authorized Service Center.

2. Torque to 105 to 130 inch pounds (12 to 15 N•m).

1. Remove cutter knife (E) from debris shield (F)

2. Place knife in a bench vise. Sharpen knife using a

flat file, being careful to maintain the angle of cutting edge. File in one direction only.

Warning: Failure to follow these steps may

cause varnish to form in the carburetor and difficult starting or permanent damage following storage.

1. Perform all the general maintenance

recommended in the Maintenance Section of your User Manual.

2. Clean exterior of engine, drive shaft assembly,

debris shield and stringhead.

3. Drain fuel from the fuel tank.

4. After fuel is drained, start engine.

5. Run engine at idle until unit stops. This will purge

the carburetor of fuel.

6. Allow engine to cool (approx. 5 minutes).

8. Pour 1 teaspoon of clean 2-cycle oil into the

9. Store unit in a cool, dry place away from any

source of ignition such as an oil burner, water heater, etc.

2. Pull starter rope briskly to clear excess oil from

3. Clean and gap spark plug or install a new spark

plug with proper gap.

4. Prepare unit for operation.

5. Fill fuel tank with proper fuel / oil mixture. See Fuel

and Lubrication Section.

Trouble shooting the engine PROBABLE CAUSE Incorrect starting procedures. Incorrect carburetor mixture adjustment setting. Fouled spark plug Fuel filter plugged. Incorrect lever position on choke. Dirty air filter. Incorrect carburetor mixture adjustment setting. Incorrect carburetor mixture adjustment setting. Incorrectly gapped spark plug. Incorrect carburetor mixture adjustment setting. Incorrect fuel mixture. CORRECTIVE ACTION Follow instructions in the User Manual. Have carburetor adjusted by an Authorized Service Center. Clean / gap or replace plug. Replace fuel filter. Move to RUN position. Remove, clean and reinstall filter. Have carburetor adjusted by an Authorized Service Center. Have carburetor adjusted by an Authorized Service Center. Clean / gap or replace plug. Have carburetor adjusted by an Authorized Service Center. Use properly mixed fuel (25:1 mixture). PROBLEM Unit won’t start or starts but will not run. Unit starts, but engine has low power. Engine hesitates. No power under load. Runs erratically. Smokes excessively. Anleitung_BMT24-MTK24 19.12.2002 12:31 Uhr Seite 2223 Sécurité • Utilisation • Entretien