Shindaiwa 81646 - Manual (Page 18)

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Poor acceleration.
Clogged air filter.
Clogged fuel filter.
Lean fuel/air mixture.
Idle speed set too low.
Clean or replace the air filter.
Replace the fuel filter.
Consult with an authorized servicing dealer.
Adjust: 2,750 (±250) rpm (min -1 )
Symptom Possible Cause Remedy
Engine stops abruptly.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or loose terminal.
Ignition failure.
Piston seizure.
Reset the switch and re-start.
Refuel. See page 9.
Replace filter.
Drain; replace with clean fuel. See page 9.
Clean or replace spark plug with a Champion
CJ8 or equivalent type spark plug of the correct
heat range.
Replace the ignition unit.
Consult with an authorized servicing dealer.
Engine difficult to shut off.
Ground (stop) wire is disconnected, or
switch is defective.
Overheating due to incorrect spark plug.
Overheated engine.
Test and replace as required.
Replace spark plug with a Champion CJ8 or
equivalent spark plug of the correct heat
range.
Idle engine until cool.
Cutting attachment rotates at
engine idle.
Engine idle too high.
Broken clutch spring or worn clutch
spring boss.
Loose attachment holder.
Set idle: 2,750 (±250) rpm (min -1 )
Replace spring/shoes as required, check idle
speed.
Inspect and re-tighten holders securely.
Excessive vibration.
Warped or damaged cutting attachment.
Loose gearcase.
Bent main shaft/worn or damaged
bushings.
Inspect and replace attachment as required.
Tighten gearcase securely.
Inspect and replace as necessary.
Cutting attachment will not
rotate.
Shaft not installed in powerhead or
gearcase.
Broken shaft.
Damaged gearcase.
Inspect and reinstall as required.
Consult with an authorized servicing dealer.
Consult with an authorized servicing dealer.
ADDITIONAL PROBLEMS
Troubleshooting Guide (continued)