Troubleshooting Guide (continued)
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| ADDITIONAL PROBLEMS |
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Symptom |
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| Possible Cause |
| Remedy |
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| Clogged air cleaner element. |
| Clean the air cleaner element. |
Poor acceleration. |
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| Clogged fuel filter. |
| Replace the fuel filter. | |
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| Carburetor mixture too lean. |
| 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 |
Engine stops abruptly. |
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| Fuel tank empty. |
| Refuel. | |
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| Clogged fuel filter. |
| Replace fuel filter. |
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| Water in the fuel. |
| Drain and refill with fresh, clean unleaded gasoline |
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| with a pump octane of 87 or higher mixed with a |
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| gasoline/oil ratio. |
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| Shorted spark plug or loose terminal. |
| Clean and replace spark plug, tighten the terminal. |
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| Ignition failure. |
| Consult with an authorized servicing dealer. |
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| Piston seizure. |
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| Ground (stop) wire is disconnected, |
| Test and replace as required. |
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Engine difficult to shut off. |
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| or switch is defective. |
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| Overheating due to incorrect spark plug. |
| Replace the spark plug with a NGK CMR5H or |
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| equivalent spark plug of the correct heat range. |
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| Adjust the spark plug electrode gap 0.6 mm. |
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| Overheated engine |
| Idle engine until cool. Refer to page 7. |
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| (overheated engine). |
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| Engine idle too high. |
| Set idle: 3,000 (±250) RPM |
Cutting attachment moves at |
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| Broken clutch spring or worn clutch spring boss. |
| Replace spring/shoes as required, check idle speed. | |
engine idle. |
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| Warped or damaged cutters. |
| Inspect and repair cutters as required. |
Excessive vibration. |
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| Loose gearcase. |
| Tighten gearcase securely | |
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| Damaged crankshaft/worn or damaged bushings. |
| Inspect and replace as necessary. |
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| Damaged/worn clutch. |
| Inspect and replace as required |
Cutting attachment will not move. |
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| Damaged gearcase |
| Consult with an authorized servicing dealer. | |
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14
