Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Symptom |
| Possible Cause |
| Remedy | |
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| Clogged air filter. |
| Clean the air filter. | |
Poor acceleration. | |||||
| Clogged fuel filter. |
| Replace the fuel filter. | ||
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| Lean fuel/air mixture. |
| Consult with an authorized servicing dealer. | |
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| Idle speed set too low. |
| Adjust: 3,000 (±250) RPM | |
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| Switch turned off. |
| Reset the switch and restart. | |
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Engine stops abruptly. |
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| Fuel tank empty. |
| Refuel. See page 7. | ||
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| Clogged fuel filter. |
| Replace fuel filter. | |
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| Water in the fuel. |
| Drain; replace with clean fuel. See page 7. | |
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| Shorted spark plug or loose terminal. |
| Clean and replace spark plug, tighten | |
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| the terminal. | |
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| Ignition failure. |
| Replace the ignition unit. | |
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| Piston seizure. |
| Consult with an authorized servicing dealer. | |
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| Ground (stop) wire is disconnected or |
| Test and replace as required. | |
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Engine difficult to shut off. |
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| switch is defective. |
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| Overheating due to incorrect spark plug. |
| Idle engine until cool. | |
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| Clean and regap the plug to 0.024 - 0.028 | |
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| inch (0.6 - 0.7 mm). Correct plug: NGK BPMR6A | |
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| or equivalent resistor type spark plug of the | |
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| correct range. | |
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| Overheated engine. |
| Idle engine until cool. | |
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| Engine idle too high. |
| Set idle: 3,000 (±250) RPM | |
Cutting attachment |
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rotates at engine idle. |
| Broken clutch spring or worn clutch |
| Replace spring/shoes as required, check | |
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| spring boss. |
| idle speed. | |
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| Loose attachment holder. |
| Inspect and | |
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Engine will not idle down.
Engine idle set too high.
Engine has an air leak.
Set idle: 3,000 (±250) RPM
Consult with an authorized servicing dealer.
Symptom
Excessive vibration.
ADDITIONAL PROBLEMS
Possible Cause |
| Remedy |
Warped or damaged cutting attachment. |
| Inspect and replace attachment as required. |
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Loose gearcase. |
| Tighten gearcase securely. |
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Bent main shaft/worn or damaged |
| Inspect and replace as necessary. |
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liner. |
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Cutting 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.
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