Shindaiwa 285s Owner's/Operator's Manual page 21

TROUBLESHOOTING
Symptom
Poor acceleration.
Engine stops abruptly.
Engine difficult to stop or will not
stop.
Chain rotates at idle speed.
Excessive vibration
ADDITIONAL PROBLEMS
Possible Cause
Plugged spark arrester screen.
Clogged air filter.
Clogged fuel filter.
Chain brake engaged.
Carburetor mixture too rich or too lean.
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 coil faulty.
Piston seizure.
Ground (ignition switch) wire is discon-
nected, or switch is defective.
Overheating due to incorrect spark
plug.
Overheated engine.
Engine idle too fast.
Broken clutch spring or shoe.
Worn or damaged sprocket, chain, or
bar.
Bent crankshaft.
Remedy
Inspect and clean spark arrester screen
if necessary. See page 17.
Clean the air cleaner element.
Replace the fuel filter.
Inspect and/or test brake. Consult with
an authorized servicing dealer.
Consult with an authorized servicing
dealer.
Adjust: ,800-3,00 rpm (min
Set the switch to ("ON") and re-start.
Refuel.
Clean or replace filter as required.
Drain; replace with clean fuel.
Clean or replace spark plug. Tighten
the terminal.
Replace the ignition unit.
Consult with an authorized servicing
dealer.
Consult with an authorized servicing
dealer.
Correct plug: NGK BPMR7A.
Idle engine until cool.
Set idle: ,800-3,00 rpm (min
Replace spring/shoes as required.
Inspect and replace chain components
as required.
Consult with an authorized servicing
dealer.
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