Troubleshooting Guide (continued)

LOW POWER OUTPUT

What To Check

 

 

Possible Cause

 

Remedy

 

 

 

 

Operator is overworking the unit.

 

Use a lower throttle setting.

 

 

 

 

 

 

 

 

 

Is the engine overheating?

 

 

 

 

Carburetor mixture is too lean.

 

Consult with an authorized servicing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

dealer.

 

 

 

 

Improper fuel ratio.

 

Refill with clean, fresh unleaded

 

 

 

 

 

 

 

 

 

 

 

gasoline with a pump octane of 87 or

 

 

 

 

 

 

higher, mixed with a 2-stroke air cooled

 

 

 

 

 

 

engine oil that meets or exceeds ISO-L-

 

 

 

 

 

 

EGD and/or JASO FD classified oils at

 

 

 

 

Fallen leaves or debris on intake cover.

 

50:1 gasoline/oil ratio.

 

 

 

 

 

 

 

 

 

 

Clean the intake cover.

 

 

 

 

 

 

 

 

 

Fan, fan cover, cylinder fins dirty

 

Clean, repair or replace as necessary.

 

 

 

 

 

 

 

 

 

or damaged.

 

 

 

 

 

 

Carbon deposits on the piston or

 

Consult with an authorized

 

 

 

 

 

 

 

 

 

in the muffler.

 

servicing dealer.

 

 

 

 

 

 

 

 

 

 

 

Clogged air cleaner element.

 

Service the air cleaner element.

 

 

 

 

 

Engine is rough at all

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

speeds. May also have

 

 

 

Loose or damaged spark plug.

 

Tighten or replace the spark plug.

 

 

 

 

black smoke and/or

 

 

 

 

 

See page 11.

unburned fuel at the

 

 

 

 

 

 

exhaust.

 

 

 

Air leakage or clogged fuel line.

 

Repair or replace fuel filter and/or

 

 

 

 

 

 

 

 

Water in the fuel.

 

fuel line.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace the fuel. See page 7.

 

 

 

 

 

 

 

 

 

Piston seizure.

 

Consult with an authorized

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Faulty carburetor and/or diaphragm.

 

servicing dealer.

 

 

 

 

 

 

 

Engine is knocking.

Overheating condition. Improper fuel.

Carbon deposits in the combustion chamber.

See above.

Check fuel octane rating; check for presence of alcohol in the fuel. See page 7. Refuel as necessary.

Consult with an authorized servicing dealer.

20

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Shindaiwa HT231, X7502862800 Engine is rough at all Speeds. May also have, Black smoke and/or, Unburned fuel at Exhaust

HT231, X7502862800 specifications

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