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.
Fallen leaves or debris on intake cover.
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 servicing dealer.
Refill with clean, fresh unleaded gasoline with a pump octane of 87 or higher, mixed with a premium
Clean the intake cover.
Clean, repair or replace as necessary.
Consult with an authorized 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. See page 11.
Repair or replace fuel filter and/or fuel line.
Replace the fuel. See page 7.
Consult with an authorized 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.
14
