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Troubleshooting guide, No yes what to check possible cause remedy, No yes no yes yes no yes – Shindaiwa LE261 User Manual

Page 15: What to check possible cause remedy

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15

NO

Troubleshooting Guide

Does the engine crank?

Good compression?

Does the tank contain fresh fuel

of the proper grade?

Is fuel visible and moving in the

return line when priming?

Is there spark at the spark plug

wire terminal?

Check the spark plug.

Faulty recoil starter.

Fluid in the crankcase.

Internal damage.

Loose spark plug.

Excess wear on cylinder, piston, rings.

Fuel incorrect, stale, or contaminated;

mixture incorrect.

Check for clogged fuel filter and/or vent.

The ignition switch is in “O” (OFF) position.

Shorted ignition ground.

Faulty ignition unit.

If the plug is wet, excess fuel may

be in the cylinder.

The plug is fouled or improperly gapped.

The plug is damaged internally or

of the wrong size.

Consult with an authorized servicing dealer.

Tighten and re-test.

Consult with an authorized servicing dealer.

Refill with fresh, clean unleaded gasoline with a pump

octane of 87 or higher mixed with a 2-cycle air cooled

mixing oil that meets or exceeds ISO-L-EGD and/or

JASO FC classified oils at 50:1 gasoline/oil ratio.

Clean as required; restart.

Move switch to “I” (ON) position and re-start.

Consult with an authorized servicing dealer.

Crank the engine with the plug removed, reinstall the

plug, and restart.

Clean and regap the plug to 0.024” (0.6 - 0.7 mm).

Restart.

Replace the plug with a Champion CJ8Y or equivalent

type spark plug of the correct heat range. Restart.

NO

yEs

what To Check

Possible Cause

Remedy

ENGINE DOES NOT START

NO

yEs

NO

yEs

yEs

NO

yEs

Is the engine overheating?

Engine is rough at all speeds.

May also have black smoke and/

or unburned fuel at the exhaust.

Operator is overworking the unit.

Carburetor mixture is too lean.

Improper fuel ratio.

Fan, fan cover, cylinder fins dirty or damaged.

Carbon deposits on the piston or in the muffler.

Clogged air filter.

Loose or damaged spark plug.

Air leakage or clogged fuel line.

Water in the fuel.

Piston seizure.

Faulty carburetor and/or diaphragm.

Overheating condition.

Improper fuel.

Carbon deposits in the combustion chamber.

Shorten trimmer line. Cut at a slower rate.

Consult with an authorized servicing dealer.

Refill with fresh, clean unleaded gasoline with a pump

octane of 87 or higher mixed with a 2-cycle air cooled

mixing oil that meets or exceeds ISO-L-EGD and/or

JASO FC classified oils at 50:1 gasoline/oil ratio.

Consult with an authorized servicing dealer.

Service the air filter.

Tighten or replace.

Repair or replace fuel filter and/or fuel line.

Refill with fresh fuel/oil mixture. See page 8.

Consult with an authorized servicing dealer.

See above.

Check fuel octane rating; check for presence of

alcohol in the fuel (page 8). Refuel as necessary.

Consult with an authorized servicing dealer.

what To Check

Possible Cause

Remedy

LOW POWER OUTPUT

Engine is knocking.

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