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Troubleshooting Guide (continued)
Is the engine overheating?
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.
Cut at a slower rate.
Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with
a pump octane of 87 or higher mixed with
a 2-cycle air cooled mixing oil that meets or
exceeds ISO-L-EGD and/or JASO FC classified
oils at 50:1 gasoline/oil ratio.
Clean, repair or replace as necessary.
Consult with an authorized servicing dealer.
What To Check Possible Cause Remedy
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.
Valve clearance set incorrectly.
Service the air cleaner element.
Tighten or replace.
Repair or replace filter and/or fuel line.
Replace the fuel. See page 8.
Consult with an authorized servicing dealer.
Engine is knocking.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion
chamber.
Valve clearance set incorrectly.
See above.
Check fuel octane rating; check for presence of
alcohol in the fuel (pg. 8). Refuel as necessary.
Consult with an authorized servicing dealer.
ADDITIONAL PROBLEMS
LOW POWER OUTPUT