Shindaiwa 89303 Owner's/Operator's Manual page 22

Troubleshooting Guide (continued)
What To Check
Poor acceleration.
Engine stops abruptly.
Engine difficult to
shut off.
Top of engine is getting
dirty and oily.
Engine will not
idle down.
Cutting attachment
moves at engine idle.
Excessive vibration.
Cutting attachment will
not move.
22
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.
Valve cover is leaking.
Idle set too high.
Engine has an air leak.
Engine idle too high.
Broken clutch spring or worn clutch
spring boss.
Loose attachment holder.
Warped or damaged attachment.
Loose gearcase.
Bent main shaft/worn or damaged
bushings.
Shaft not installed in powerhead or
gearcase.
Broken shaft.
Damaged gearcase.
Remedy
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized
servicing dealer.
Adjust idle. Check Specifications page for
correct idle speed.
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.
Replace the spark plug. Check the
Specifications page in this manual for the
proper spark plug for your unit.
Idle engine until cool.
Consult with an authorized
servicing dealer.
Adjust idle. Check Specifications page for
correct idle speed.
Consult with an authorized servicing dealer.
Adjust idle. Check Specifications page for
correct idle speed.
Replace spring/shoes as required,
check idle speed.
Inspect and re-tighten holders securely.
Inspect and replace attachment
as required.
Tighten gearcase securely.
Inspect and replace as necessary.
Inspect and reinstall as required.
Consult with a authorized
servicing dealer.