Shindaiwa DH235 Operator's Manual download pdf (Page 19)

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 ﬁ ns dirty

or damaged.

Carbon deposits on the piston or

in the mufﬂ er.

Clogged air cleaner element.

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.

Use a lower throttle setting.

Consult with an authorized shindaiwa

servicing dealer.

Reﬁ ll with fresh, clean unleaded gasoline with a pump

octane of 89 or higher mixed with a 2 stroke engine oil that

meets or exceeds ISO-L-EGD and/or JASO FD classiﬁ ed

oils at 50:1 gasoline/oil ratio.

Clean, repair or replace as necessary.

Consult with an authorized shindaiwa

servicing dealer.

Service the air cleaner element.

Tighten or replace the spark plug.

Check the Speciﬁ cations section for the correct plug and gap

for your unit.

Repair or replace fuel ﬁ lter and/or

fuel line.

Reﬁ ll with fresh, clean unleaded gasoline with a pump

octane of 89 or higher mixed with a 2 stroke engine oil that

meets or exceeds ISO-L-EGD and/or JASO FD classiﬁ ed

oils at 50:1 gasoline/oil ratio.

Consult with an authorized shindaiwa servicing dealer.

Consult with an authorized shindaiwa

servicing dealer.

Reﬁ ll with fresh, clean unleaded gasoline with a pump

octane of 89 or higher mixed with a 2 stroke engine oil that

meets or exceeds ISO-L-EGD and/or JASO FD classiﬁ ed

oils at 50:1 gasoline/oil ratio.

Consult with an authorized shindaiwa

servicing dealer.

What To Check

Possible Cause

Remedy

LOW POWER OUTPUT

Engine is knocking.

Troubleshooting Guide (continued)

1 2 ... 14 15 16 17 18 19 20 21 22 23 24

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Shindaiwa DH235 Operator's Manual Page 19

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