Troubleshooting Guide (continued)
ADDITIONAL PROBLEMS
Symptom |
|
| Possible Cause |
|
|
| Remedy | |||
|
|
| Clogged air filter. |
|
|
|
| Clean the air filter. | ||
Poor acceleration. | ||||||||||
|
| Clogged fuel filter. |
|
|
|
| Replace the fuel filter. | |||
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
| ||||
|
|
| Lean fuel/air mixture. |
|
|
|
| Consult with an authorized servicing dealer. | ||
|
|
| Idle speed set too low. |
|
|
|
| Adjust: 3,000 (5300) rpm | ||
|
|
|
|
| ||||||
|
|
| Switch turned off. |
|
|
|
| Reset the switch and restart. | ||
|
|
|
|
| ||||||
Engine stops abruptly. |
| |||||||||
|
| Fuel tank empty. |
|
|
|
| Refuel. See page 8. | |||
|
|
|
|
|
|
| ||||
|
| |||||||||
|
|
| Clogged fuel filter. |
|
|
|
| Replace fuel filter. | ||
|
|
| Water in the fuel. |
|
|
|
| Drain; replace with clean fuel. See page 8. | ||
|
|
| Shorted spark plug or loose terminal. |
|
|
|
| Clean and replace spark plug, tighten | ||
|
|
|
|
|
|
|
| the terminal. | ||
|
|
| Ignition failure. |
|
|
|
| Replace the ignition unit. | ||
|
|
| Piston seizure. |
|
|
|
| Consult with an authorized servicing dealer. | ||
|
|
|
|
|
|
|
|
|
| |
|
|
| Ground (stop) wire is disconnected or |
|
|
|
| Test and replace as required. | ||
|
|
|
|
| ||||||
Engine difficult to shut off. |
| |||||||||
|
| switch is defective. |
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
| ||
|
|
| Overheating due to incorrect spark plug. |
|
|
|
| Idle engine until cool. | ||
|
|
|
|
|
|
|
| Clean and regap the plug to 0.024 - 0.028 | ||
|
|
|
|
|
|
|
| inch (0.6 - 0.7 mm). Correct plug: NGK CMR5H | ||
|
|
|
|
|
|
|
| or equivalent resistor type spark plug of the | ||
|
|
|
|
|
|
|
| correct range. | ||
|
|
| Overheated engine. |
|
|
|
| Idle engine until cool. | ||
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
| |
|
|
| Valve cover is leaking. |
|
|
|
| Consult with an authorized servicing dealer. | ||
Top of engine is getting |
|
|
|
| ||||||
|
|
|
|
|
|
|
|
| ||
dirty and oily. |
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
| |
|
|
| Engine idle too high. |
|
|
|
| Set idle: 3,000 (±300) rpm | ||
Cutting attachment |
|
|
|
| ||||||
|
|
|
|
|
|
|
|
| ||
rotates at engine idle. |
|
| Broken clutch spring or worn clutch |
|
|
|
| Replace spring/shoes as required, check | ||
|
|
|
|
|
|
| ||||
|
|
| spring boss. |
|
|
|
| idle speed. | ||
|
|
| Loose attachment holder. |
|
|
|
| Inspect and | ||
|
|
|
|
|
|
|
|
|
| |
|
|
| Engine idle set too high. |
|
|
| Set idle: 3,000 (±300) rpm | |||
Engine will not idle down. |
|
|
| |||||||
|
| Engine has an air leak. |
|
|
| Consult with an authorized servicing dealer. | ||||
|
|
|
|
|
| |||||
|
| |||||||||
|
|
|
|
|
|
|
|
| ||
|
|
| Warped or damaged cutting attachment. |
|
|
| Inspect and replace attachment as required. | |||
Excessive vibration. |
|
|
|
|
| |||||
|
| Loose gearcase. |
|
|
| Tighten gearcase securely. | ||||
|
|
|
|
|
| |||||
|
|
|
|
|
| |||||
|
|
| Bent main shaft/worn or damaged |
|
|
| Inspect and replace as necessary. | |||
|
|
| bushings. |
|
|
|
|
| ||
|
|
| Trimmer line not wound properly on spool. |
| Rewind trimmer line. | |||||
|
|
|
| |||||||
Cutting attachment will not move.
Shaft not installed in powerhead or |
| Inspect and reinstall as required. |
| ||
gearcase. |
|
|
Broken shaft. |
| Consult with an authorized servicing dealer. |
|
| |
Damaged gearcase. |
|
|
17
