Shindaiwa 89302 Owner's/Operator's Manual page 20

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.
20
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.
Trimmer line not wound properly on
spool.
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 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.
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.
Adjust idle. Check Specifications page
for correct idle speed.
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.
Rewind trimmer line.
Adjust idle. Check Specifications page
for correct idle speed.
Consult with a authorized
servicing dealer.