Troubleshooting Guide (continued)
LOW POWER OUTPUT
What To Check
Is the engine overheating? 
Possible Cause
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.
Remedy
Use a lower throttle setting.
Consult with an authorized Shindaiwa servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump octane of 89 or higher mixed with an air cooled engine oil that meets or exceeds
Clean, repair or replace as necessary.
Consult with an authorized Shindaiwa servicing dealer.
Engine is rough at all speeds. May also have black smoke and/or unburned fuel at the exhaust.
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.
Service the air cleaner element.
Tighten or replace the spark plug.
Check the Specifications section for the correct plug and gap for your unit.
Repair or replace fuel filter and/or fuel line.
Refill with fresh, clean unleaded gasoline with a pump octane of 89 or higher mixed with an air cooled engine oil that meets or exceeds
Consult with an authorized Shindaiwa servicing dealer.
Engine is knocking.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion chamber.
Consult with an authorized Shindaiwa servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump octane of 89 or higher mixed with an air cooled engine oil that meets or exceeds
Consult with an authorized Shindaiwa servicing dealer.
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