Operation Manual
Page 1
... 6 Understanding Propan.e 7 Installing the Propane Canist.e..r 8 Installing Attachment.s 9 Starting / Stopping 10 Operation 11 Maintenance 12 Cleaning and Storage 19 Troubleshooting 19 Speci¯cations 20 Warranty 21 ECO-TRIMMER MODELS: ST 025SS ST 025DC ST 025CS ST 025DS DO NOT RETURN THE UNIT TO THE RETAILER Call 1-866-941-LEHR (5347) WARNING: THE ENGINE EXHAUST...
... 6 Understanding Propan.e 7 Installing the Propane Canist.e..r 8 Installing Attachment.s 9 Starting / Stopping 10 Operation 11 Maintenance 12 Cleaning and Storage 19 Troubleshooting 19 Speci¯cations 20 Warranty 21 ECO-TRIMMER MODELS: ST 025SS ST 025DC ST 025CS ST 025DS DO NOT RETURN THE UNIT TO THE RETAILER Call 1-866-941-LEHR (5347) WARNING: THE ENGINE EXHAUST...
Operation Manual
Page 2
...sharp objects such as sa glass, wire, etc. All U.S. These can break o and become dangerous projectiles. • Be a or the engine be constructed, equipped and maintained for adult use the unit. • Do a make changes at any way. This unit is intended for ... encouraged to wear eye protection. Never use of printing. SERVICE AND SAFETY S LEHR ECO-TRIMMER IMPORTANT SAFETY INSTRUCTIONS DU 4-CYCLE PROPANE TRIMMER READ ALL INSTRUCTION BEFORE OPERATING • Ne For service call 1-866-941-LEHR in the United States, to in obtain a list of re. PROOF OF ...
...sharp objects such as sa glass, wire, etc. All U.S. These can break o and become dangerous projectiles. • Be a or the engine be constructed, equipped and maintained for adult use the unit. • Do a make changes at any way. This unit is intended for ... encouraged to wear eye protection. Never use of printing. SERVICE AND SAFETY S LEHR ECO-TRIMMER IMPORTANT SAFETY INSTRUCTIONS DU 4-CYCLE PROPANE TRIMMER READ ALL INSTRUCTION BEFORE OPERATING • Ne For service call 1-866-941-LEHR in the United States, to in obtain a list of re. PROOF OF ...
Operation Manual
Page 3
...both hands when operating. The cutting attachment remains stationary when the engine is dusty. • Wear heavy long pants, boots, ...proper footing and bal - tions. (p.19) ing parts. SAVE THESE INSTRUCTIONS LEHR | ALL RIGHTS RESERVED 2008-2009 3 Do not operate before starting . ...the unit inside a building where vapor may become entangled with propane canister attached inside a closed room or build - arrestor. anything...jewelry, short pants, sandals or go barefoot. These are marked as a trimmer. parts get extremely hot from debris. OTHER SAFETY WARNINGS • Never ...
...both hands when operating. The cutting attachment remains stationary when the engine is dusty. • Wear heavy long pants, boots, ...proper footing and bal - tions. (p.19) ing parts. SAVE THESE INSTRUCTIONS LEHR | ALL RIGHTS RESERVED 2008-2009 3 Do not operate before starting . ...the unit inside a building where vapor may become entangled with propane canister attached inside a closed room or build - arrestor. anything...jewelry, short pants, sandals or go barefoot. These are marked as a trimmer. parts get extremely hot from debris. OTHER SAFETY WARNINGS • Never ...
Operation Manual
Page 6
... bottle of oil into the oil ll hole (Fig. 7). 4-Cycle Motor Oil Fig. 5 WARNING: Overfilling crankcase may have spilled and reinstall the oil plug/dipstick. 6 LEHR | ALL RIGHTS RESERVED 2008-2009 Pour the entire bottle of oil and remove the seal covering the opening. Wipe up any oil that may cause... to come out from the crankcase (Fig.7). 4. In order to avoid damage to the unit, put oil in the crank case; It can cause premature engine wear and failure. Check and maintain the proper oil level in the crankcase before each use and change as needed .
... bottle of oil into the oil ll hole (Fig. 7). 4-Cycle Motor Oil Fig. 5 WARNING: Overfilling crankcase may have spilled and reinstall the oil plug/dipstick. 6 LEHR | ALL RIGHTS RESERVED 2008-2009 Pour the entire bottle of oil and remove the seal covering the opening. Wipe up any oil that may cause... to come out from the crankcase (Fig.7). 4. In order to avoid damage to the unit, put oil in the crank case; It can cause premature engine wear and failure. Check and maintain the proper oil level in the crankcase before each use and change as needed .
Operation Manual
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...Turn trimmer o and let cool. 2. Let cylinder burn out. * Green Key- Never re ll a disposable cylinder. Re lling may be recycled with other ignition sources, they can kill you experience headache, drowsiness, or nausea, turn o the engine. Detach cylinder when not in use if leaking. 6. Propane is ...at tem peratures above 120 degrees F° (49° C). 3. If you . If your trimmer in an enclosed area can damage seals. 5. These sources can ignite leaking gas. AFTER USE 1. LEHR | ALL RIGHTS RESERVED 2008-2009 7 If the leak persists, remove the pro pane canister. ...
...Turn trimmer o and let cool. 2. Let cylinder burn out. * Green Key- Never re ll a disposable cylinder. Re lling may be recycled with other ignition sources, they can kill you experience headache, drowsiness, or nausea, turn o the engine. Detach cylinder when not in use if leaking. 6. Propane is ...at tem peratures above 120 degrees F° (49° C). 3. If you . If your trimmer in an enclosed area can damage seals. 5. These sources can ignite leaking gas. AFTER USE 1. LEHR | ALL RIGHTS RESERVED 2008-2009 7 If the leak persists, remove the pro pane canister. ...
Operation Manual
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...diameter are the correct canisters (Fig. 8). VAPOR MAY EXPLODE. ALWAYS STOP THE ENGINE AND ALLOW IT TO COOL BEFORE REPLACING THE PROPANE CANISTER. Make sure the engine is o . TOR ONTO A PROPANE CANISTER THAT HAS IMPROPER OR DAMAGED THREADS. WARNING: EXTREMELY FLAMMABLE FIRE/ EXPLOSION ...trimmer and potentially result in accordance 2. Do not over the threaded end, remove it onto threads clockwise (Fig. 9B). Fig. 9A Canister Clamp 8 LEHR | ALL RIGHTS RESERVED 2008-2009 WARNING: PROPANE IS EXTREMELY FLAMMABLE. INSTALLING THE PROPANE CANISTER USE THE CORRECT PROPANE...
...diameter are the correct canisters (Fig. 8). VAPOR MAY EXPLODE. ALWAYS STOP THE ENGINE AND ALLOW IT TO COOL BEFORE REPLACING THE PROPANE CANISTER. Make sure the engine is o . TOR ONTO A PROPANE CANISTER THAT HAS IMPROPER OR DAMAGED THREADS. WARNING: EXTREMELY FLAMMABLE FIRE/ EXPLOSION ...trimmer and potentially result in accordance 2. Do not over the threaded end, remove it onto threads clockwise (Fig. 9B). Fig. 9A Canister Clamp 8 LEHR | ALL RIGHTS RESERVED 2008-2009 WARNING: PROPANE IS EXTREMELY FLAMMABLE. INSTALLING THE PROPANE CANISTER USE THE CORRECT PROPANE...
Operation Manual
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...: Always install the attachment so that the engine remains in the receiving hole only. LEHR | ALL RIGHTS RESERVED 2008-2009 9 Turn the knob clockwise to loosen (Fig. 10). 2. REMOVING CUTTING ATTACHMENTS OR ADD-ONS 1. Upper Shaft Housing Knob Fig. 10 Attachment Housing Coupler Release... are to make accessory installation or removal easier. 1. A secondary receiving hole is upright (propane tank on straight out of the coupler (Fig. 12). For edging (when using the string trimmer head cut ting attachment) lock the release button of the cut ting attachment into coupler ...
...: Always install the attachment so that the engine remains in the receiving hole only. LEHR | ALL RIGHTS RESERVED 2008-2009 9 Turn the knob clockwise to loosen (Fig. 10). 2. REMOVING CUTTING ATTACHMENTS OR ADD-ONS 1. Upper Shaft Housing Knob Fig. 10 Attachment Housing Coupler Release... are to make accessory installation or removal easier. 1. A secondary receiving hole is upright (propane tank on straight out of the coupler (Fig. 12). For edging (when using the string trimmer head cut ting attachment) lock the release button of the cut ting attachment into coupler ...
Operation Manual
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The engine should start . Stop/O Safety trigger Start/On(I) WARNING: AVOID ACCIDENTAL STARTING. Throttle Control Fig. 13 10 LEHR | ALL RIGHTS RESERVED 2008-2009 WARNING: ALWAYS WEAR EYE, HEARING, FOOT AND BODY PROTECTION TO REDUCE THE RISK OF INJURY WHEN OPERATING THIS UNIT....unit is equipped with a spring loaded type ON/OFF switch, it will always remain in the ON position. 3. When done using the trimmer for the day, disconnect the propane canister from the throttle control. MAKE SURE YOU ARE IN THE STARTING POSITION WHEN PULLING THE STARTER ROPE. (FIG. 14) TO AVOID ...
The engine should start . Stop/O Safety trigger Start/On(I) WARNING: AVOID ACCIDENTAL STARTING. Throttle Control Fig. 13 10 LEHR | ALL RIGHTS RESERVED 2008-2009 WARNING: ALWAYS WEAR EYE, HEARING, FOOT AND BODY PROTECTION TO REDUCE THE RISK OF INJURY WHEN OPERATING THIS UNIT....unit is equipped with a spring loaded type ON/OFF switch, it will always remain in the ON position. 3. When done using the trimmer for the day, disconnect the propane canister from the throttle control. MAKE SURE YOU ARE IN THE STARTING POSITION WHEN PULLING THE STARTER ROPE. (FIG. 14) TO AVOID ...
Operation Manual
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... top to bottom in small increments to avoid prema ture line wear or engine drag. • Slowly move the trimmer into objects such as opposed to cut thick, stalky weeds • Forcing.... Tap the knob on ground to the ground (Fig. 16). 30° Fig. 16 LEHR | ALL RIGHTS RESERVED 2008-2009 11 ADVANCING THE CUTTING LINE String advance is accomplished by tapping ... and proper clothing. • With a slightly-bent right arm, the operator's right hand is holding the shaft grip. • The operator's left arm is cut 3. Cutting shorter lengths produces the best results. •...
... top to bottom in small increments to avoid prema ture line wear or engine drag. • Slowly move the trimmer into objects such as opposed to cut thick, stalky weeds • Forcing.... Tap the knob on ground to the ground (Fig. 16). 30° Fig. 16 LEHR | ALL RIGHTS RESERVED 2008-2009 11 ADVANCING THE CUTTING LINE String advance is accomplished by tapping ... and proper clothing. • With a slightly-bent right arm, the operator's right hand is holding the shaft grip. • The operator's left arm is cut 3. Cutting shorter lengths produces the best results. •...
Operation Manual
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...(Fig. 17). Repeat this procedure until the oil level reaches the full mark of the engine. Stop the engine and allow to get a proper oil level reading. 3. Keep dirt, grass clippings and other...Fig. 17 WARNING: WHEN SERVICING, USE ONLY IDENTICAL REPLACEMENT PARTS. NOTE: Failure to maintain your trimmer at the recom mended schedule may result in poor performance and/ or cause permanent damage to the ... 13 PAGE 13 PAGE 13 PAGE 14 PAGE 17 Perform these pro cedures call 1-866-941-LEHR for the location of your nearest authorized service dealer. Clean the area around the oil ll ...
...(Fig. 17). Repeat this procedure until the oil level reaches the full mark of the engine. Stop the engine and allow to get a proper oil level reading. 3. Keep dirt, grass clippings and other...Fig. 17 WARNING: WHEN SERVICING, USE ONLY IDENTICAL REPLACEMENT PARTS. NOTE: Failure to maintain your trimmer at the recom mended schedule may result in poor performance and/ or cause permanent damage to the ... 13 PAGE 13 PAGE 13 PAGE 14 PAGE 17 Perform these pro cedures call 1-866-941-LEHR for the location of your nearest authorized service dealer. Clean the area around the oil ll ...
Operation Manual
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...). Air Filter Air Filter Cover Screw Fig. 19 Air Filter Base Plate NOTE: Wear gloves to your engine. 1. Replace the oil ll plug/dipstick. 7. LEHR | ALL RIGHTS RESERVED 2008-2009 13 Change the oil while the engine is operated without the air lter, you will ow freely and carry away more impurities. 1. Remove...
...). Air Filter Air Filter Cover Screw Fig. 19 Air Filter Base Plate NOTE: Wear gloves to your engine. 1. Replace the oil ll plug/dipstick. 7. LEHR | ALL RIGHTS RESERVED 2008-2009 13 Change the oil while the engine is operated without the air lter, you will ow freely and carry away more impurities. 1. Remove...
Operation Manual
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...dirty spark plug. Turn the 5/8 in . (0.5 mm) Fig.23 14 LEHR | ALL RIGHTS RESERVED 2008-2009 socket clockwise until the engine idles smoothly. REPLACING THE SPARK PLUGS Use a replacement part number NGK CMR6A. GRIT IN THE ENGINE COULD DAMAGE THE CYLINDER. 0.02 in . The cor rect air gap is..., 1/8 of the air lter before adjusting the idle speed screw. A dirty or oil saturated air lter will not idle • the engine hesitates or stalls on the rear side of engine power Check the spark plug for an out of the unit. If the cutting attachment rotates when the...
...dirty spark plug. Turn the 5/8 in . (0.5 mm) Fig.23 14 LEHR | ALL RIGHTS RESERVED 2008-2009 socket clockwise until the engine idles smoothly. REPLACING THE SPARK PLUGS Use a replacement part number NGK CMR6A. GRIT IN THE ENGINE COULD DAMAGE THE CYLINDER. 0.02 in . The cor rect air gap is..., 1/8 of the air lter before adjusting the idle speed screw. A dirty or oil saturated air lter will not idle • the engine hesitates or stalls on the rear side of engine power Check the spark plug for an out of the unit. If the cutting attachment rotates when the...
Operation Manual
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... Hook Wrap Top CCW Hook Hole Fig.24 Bump Feed Button Wrap Bottom CCW Fig. 27 9. Trimmer Head Body Spring Reel Bump Feed Button Nut Fig.25 4. Fig.28 10. Insert allen key ... Retention Hook Wire Reel Fig. 26 Fig.30 NOTE: Always use original equipment manufacturer replacement line. Lock shaft by turning CCW (Fig. 25). 8. Snap the lines through holes in place and the direction it ...pieces of the line are hooked in body. Lines other than those speci ed may make the engine overheat or fail. LEHR | ALL RIGHT RESERVED 2008-2009 15 Note how the ends of line 7.5 ft (2.28 m) ...
... Hook Wrap Top CCW Hook Hole Fig.24 Bump Feed Button Wrap Bottom CCW Fig. 27 9. Trimmer Head Body Spring Reel Bump Feed Button Nut Fig.25 4. Fig.28 10. Insert allen key ... Retention Hook Wire Reel Fig. 26 Fig.30 NOTE: Always use original equipment manufacturer replacement line. Lock shaft by turning CCW (Fig. 25). 8. Snap the lines through holes in place and the direction it ...pieces of the line are hooked in body. Lines other than those speci ed may make the engine overheat or fail. LEHR | ALL RIGHT RESERVED 2008-2009 15 Note how the ends of line 7.5 ft (2.28 m) ...
Operation Manual
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... in the correct sequence ( Fig. 40). • Tighten the left -hand thread nut to an authorized service center. 1. Engine cover screws Fig.42 Engine cover screws LEHR | All Rights Reserved 2008-2009 17 If you feel unsure or unqualified to perform this, take the unit to dissasemble with tool... checking or adjusting the valve clearances. NOTE: When using the brush cutter blade remove the bottom shield attachment by using line trimmer head (Fig. 41). Disconnect the spark plug wire. NOTE: Inspect the valve to lock the shaft. Replace when using tool provided, turn CCW.
... in the correct sequence ( Fig. 40). • Tighten the left -hand thread nut to an authorized service center. 1. Engine cover screws Fig.42 Engine cover screws LEHR | All Rights Reserved 2008-2009 17 If you feel unsure or unqualified to perform this, take the unit to dissasemble with tool... checking or adjusting the valve clearances. NOTE: When using the brush cutter blade remove the bottom shield attachment by using line trimmer head (Fig. 41). Disconnect the spark plug wire. NOTE: Inspect the valve to lock the shaft. Replace when using tool provided, turn CCW.
Operation Manual
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...dead center).Check that the piston is 0.076-0.152mm (0.003-0.006in). • Use a standard automotive 0.127mm (0.005in) feeler gage. Reinstall the engine cover checking the alignment of its travel by looking down into the spark plug hole. Remove the rocker arm cover and gasket (Fig. 43). ... is known as necessary. Reinstall the rocker arm cover using a new gasket. 5. Jam Nuts Feeler Gauge Exhaust Valve Intake Valve Fig.44 18 LEHR | ALL RIGHTS RESERVED 2008-2009 If this step. 9. Measure both the intake and exhaust valve distances. 10. Reinstall the spark plug wire. Loosen...
...dead center).Check that the piston is 0.076-0.152mm (0.003-0.006in). • Use a standard automotive 0.127mm (0.005in) feeler gage. Reinstall the engine cover checking the alignment of its travel by looking down into the spark plug hole. Remove the rocker arm cover and gasket (Fig. 43). ... is known as necessary. Reinstall the rocker arm cover using a new gasket. 5. Jam Nuts Feeler Gauge Exhaust Valve Intake Valve Fig.44 18 LEHR | ALL RIGHTS RESERVED 2008-2009 If this step. 9. Measure both the intake and exhaust valve distances. 10. Reinstall the spark plug wire. Loosen...
Operation Manual
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...the engine to cool before attempting to start the trimmer after storage. 3. Allow the engine to Changing the Oil (p.13) . TROUBLE SHOOTING ENGINE WILL NOT START CAUSE ACTION EMPTY PROPANE CANISTER ...FOR AN ADJUSTMENT ENGINE WILL NOT ACCELERATE CAUSE ACTION CUTTING ATTACHMENT BOUND WITH GRASS STOP ENGINE AND CLEAN THE CUTTING ATTACHMENT DIRTY AIR FILTER ENGINE LACKS POWER OR STALLS ... the unit while transporting. • Remove propane canister. STORAGE • Remove propane canister. • Never store the unit with soft cloth. LEHR | ALL RIGHTS RESERVED 2008-2009 19 The...
...the engine to cool before attempting to start the trimmer after storage. 3. Allow the engine to Changing the Oil (p.13) . TROUBLE SHOOTING ENGINE WILL NOT START CAUSE ACTION EMPTY PROPANE CANISTER ...FOR AN ADJUSTMENT ENGINE WILL NOT ACCELERATE CAUSE ACTION CUTTING ATTACHMENT BOUND WITH GRASS STOP ENGINE AND CLEAN THE CUTTING ATTACHMENT DIRTY AIR FILTER ENGINE LACKS POWER OR STALLS ... the unit while transporting. • Remove propane canister. STORAGE • Remove propane canister. • Never store the unit with soft cloth. LEHR | ALL RIGHTS RESERVED 2008-2009 19 The...
Operation Manual
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... TIME WITHOUT NOTICE. 20 LEHR | ALL RIGHTS RESERVES 2008-2009 SPECIFICATIONS ENGINE* ENGINE TYPE DISPLACEMENT CLUTCH TYPE OPERATING R.P.M. ELECTRONIC PUSH ON/OFF SWITCH 0.076-0.152MM (0.003-0.006 IN) 0.020 INCH (0.5 MM) SAE 10W-30 OIL 1.7 FLUIDOZ. (50mL) PROPANE 16.4OZ CANISTER CHOKE-LESS... TYPE IGNITION SWITCH VALVE CLEARANCE SPARK PLUG GAP LUBRICATION CRANKCASE OIL CAPACITY FUEL CARBURETOR STARTER MUFFLER THROTTLE DRIVE SHAFT AND HOUSING DRIVE SHAFT HOUSING THROTTLE CONTROL APPROXIMATE UNIT WEIGHT CUTTING MECHANISM LINE SPOOL DIAMETER TRIMMING LINE DIAMETER CUTTING PATH DIAMETER AIR COOLED...
... TIME WITHOUT NOTICE. 20 LEHR | ALL RIGHTS RESERVES 2008-2009 SPECIFICATIONS ENGINE* ENGINE TYPE DISPLACEMENT CLUTCH TYPE OPERATING R.P.M. ELECTRONIC PUSH ON/OFF SWITCH 0.076-0.152MM (0.003-0.006 IN) 0.020 INCH (0.5 MM) SAE 10W-30 OIL 1.7 FLUIDOZ. (50mL) PROPANE 16.4OZ CANISTER CHOKE-LESS... TYPE IGNITION SWITCH VALVE CLEARANCE SPARK PLUG GAP LUBRICATION CRANKCASE OIL CAPACITY FUEL CARBURETOR STARTER MUFFLER THROTTLE DRIVE SHAFT AND HOUSING DRIVE SHAFT HOUSING THROTTLE CONTROL APPROXIMATE UNIT WEIGHT CUTTING MECHANISM LINE SPOOL DIAMETER TRIMMING LINE DIAMETER CUTTING PATH DIAMETER AIR COOLED...
Operation Manual
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...from defects in your area, visit our website at www.golehr.com or call 1-866-941-LEHR or write to 8922 Ellis Ave. LEHR does not extend any defective power product or attachment as follows from defects in materials and work is performed at all products ...at a warranty station. Therefore, LEHR reserves the right to change, modify, or discontinue models, designs, speci cations, and accessories of all manufacturer distribution centers that the engine...
...from defects in your area, visit our website at www.golehr.com or call 1-866-941-LEHR or write to 8922 Ellis Ave. LEHR does not extend any defective power product or attachment as follows from defects in materials and work is performed at all products ...at a warranty station. Therefore, LEHR reserves the right to change, modify, or discontinue models, designs, speci cations, and accessories of all manufacturer distribution centers that the engine...