Troubleshooting Guide (continued)
Symptom
Poor acceleration.
Engine stops abruptly.
[Engine difficult to shut off._
Possible Cause
Clogged air filter,
Clogged fuel filter,
Lean fuel/air mixture.
Idle speed set too low.
Switch turned off.
Fuel tank empty,
Clogged fuel filter,
Water in the fuel,
Shorted spark plug or loose terminal,
Ignition failure.
Piston seizure.
Ground (stop) wire is disconnected or switch is defective.
Overheating due to incorrect spark plug.
Remedy
Clean tile air filter.
Replace tile fuel filter.
Consult with an authorized servicing dealer.
Adjust: 3,000 (±300) RPM (mind).
Reset tile switch and restart.
Refuel. See page 10.
Replace fuel filter.
[)rain; replace with clean fuel. See page 10.
Clean and replace spark plug, tighten tile terminal.
Replace tile ignition unit.
Consult with an authorized servicing dealer.
Test and replace as required.
Idle engine until cool.
Clean and regap tile plug to 0.024- 0.028
inch (0.6- 0.7 ram). Correct plug: NGK CMR5H or equivalent resistor type spark plug of tile
correct range.
|
|
| Overheated engine. | |
dirtyTop ofandengineoily. is getting | _ | Valve cover is leaking. | ||
Cutting | attachment |
|
|
|
rotates | at engine idle. |
| Broken clutch spring or worn clutch | |
|
|
| ||
|
| _ | spring | boss. |
|
| Engine | idle too high. | |
Loose attachment holder.
[ Engine will not idle down.
Engine has an air leak.
Idle engine until cool.
Consult with an authorized servicing dealer.
Set idle: 3,000 (±300) RPM
Replace spring/shoes as required, check idle speed.
Inspect and
Set idle: 3,000 (±300) RPM
Consult with an authorized servicing dealer.
Symptom
I Excessive vibration.
Cutting attachment will not rotate.
Possible Cause
Warped or damaged cutting attachment.
Loose gearcase.
Bent main shaft/worn or damaged bushings.
Trhnmer line not wound properly on spool.
Shaft not installed in powerhead or
gearcase.
Broken shaft.
Damaged gearcase.
Remedy
Inspect and replace attachment as required.
Tighten gearcase securely.
Inspect and replace as necessary.
Rewind trhnmer line.
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