Shindaiwa 81642 Troubleshooting Guide, No No No No No, Engineenginedoesdoesnotnotstart, Remedy

Troubleshooting Guide

ENGINEENGINEDOESDOESNOTNOTSTART

What To Check

Does the engine crank?

YES

Good compression?

YES

Does the tank contain fresh fuel of the proper grade?

YES

Is fuel visible and moving in the return line when priming?

YES

Is there spark at the spark plug wire terminal?

YES

NO

NO

NO

NO

NO

Possible Cause

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 system. Faulty ignition unit.

Remedy

Consult with an authorized servicing dealer.

Tighten and retest.

Consult with an authorized servicing dealer.

Refill with clean fresh unleaded gasoline with a pump octane of 87 or higher, mixed with Shindaiwa Premium 2-cycle mixing oil at a 50:1 gasoline/oil ratio.

Replace fuel filter or vent as required. Restart.

Move switch to “I” (ON) position and re-start. Consult with an authorized servicing dealer.

Check the spark plug.

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.

Crank the engine with the plug removed, replace the plug, and re-start.

Clean and re-gap the plug to 0.024 inch (0.6 mm). Re-start.

Replace the plug with a Champion CJ8 or equivalent type spark plug of the correct heat range.

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