Troubleshooting Guide (continued)

ADDITIONAL PROBLEMS

Symptom

Poor acceleration.

Possible Cause

Clogged air filter. Clogged fuel filter. Chain brake engaged.

Lean fuel/air mixture.

Idle speed set too low.

Remedy

Clean or replace the air filter. Replace the fuel filter.

Inspect and/or test brake. Consult with an authorized servicing dealer.

Consult with an authorized servicing dealer.

Adjust: 2,800 min-1.

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 restart.

Refuel. See section on Filling the Tank with Fuel..

Replace fuel filter.

Drain; replace with clean fuel. See section on Filling the Tank with Fuel.

Clean or replace the plug. Check the Specifications page for the correct spark plug. Tighten the terminal.

Replace the ignition unit.

Consult with an authorized servicing dealer.

 

 

 

 

Ground (stop) wire is disconnected, or

 

 

Test and replace as required.

 

 

 

 

 

 

Engine difficult to shut off.

 

 

 

switch is defective.

 

 

 

 

 

 

 

 

 

 

 

 

 

Overheating due to incorrect spark plug.

 

 

Replace the plug. Check the Specifications

 

 

 

 

 

 

 

 

 

 

Overheated engine

 

 

page for the correct spark plug.

 

 

 

 

 

 

 

 

 

 

 

 

Idle engine until cool.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine idle too high.

 

 

Set idle: 2,800 min-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Chain rotates at idle speed.

 

 

 

Broken clutch spring or worn clutch

 

 

 

 

Replace spring/shoes as required, check

 

 

 

 

 

 

 

 

 

 

spring boss.

 

 

 

 

idle speed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Warped or damaged sprocket, chain,

 

 

Inspect and replace chain components as

 

 

 

 

 

 

Excessive vibration.

 

 

 

or bar.

 

 

required.

 

 

 

Bent crankshaft.

 

 

Consult with an authorized servicing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

dealer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

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Shindaiwa 502s, 69033-94310 manual Additional Problems, Symptom

69033-94310, 502s specifications

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