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Troubleshooting Guide (continued)
What To Check
Poor acceleration.
Engine stops abruptly.
Engine difficult to shut off.
Cutting attachment moves at
engine idle.
Attachment will not move.
Excessive vibration.
Engine will not idle down.
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ADDITIONAL PROBLEMS
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
Overheated engine.
Engine idle too high.
Broken clutch spring or worn clutch spring
boss.
Loose attachment holder.
Shaft not installed in powerhead or gearcase.
Broken shaft.
Damaged gearcase.
Warped or damaged attachment.
Loose gearcase.
Bent main shaft/worn or damaged bushings.
Engine idle is set too high.
Engine has air leak.
Remedy
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized servicing
dealer.
Adjust: 2,750 (±250) min
.
-1
Reset the switch and re-start.
Refuel. See Fuel section of manual.
Replace fuel filter.
Drain; replace with clean fuel. See Fuel
section of manual.
Clean or replace spark plug. Check the
Specifications page in this manual for the
proper spark plug for your unit. Tighten the
terminal.
Replace the ignition unit.
Consult with an authorized servicing
dealer
Test and replace as required.
Idle engine until cool. Replace the spark plug.
Check the Specifications page in this manual
for the proper spark plug for your unit.
Idle engine until cool.
Set idle: 2,750 (±250) min
.
-1
Replace spring/shoes as required.
Inspect and re-tighten holders securely.
Inspect and reinstall as required.
Consult with a authorized servicing
dealer.
Inspect and replace attachment as
required.
Tighten gearcase securely.
Inspect and replace as necessary.
Set idle: 2,750 (±250) min
.
-1
Consult with a authorized servicing
dealer.
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