15
LOW POWER OUTPUT
Troubleshooting Guide
Is the engine overheating?
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.
Use a lower throttle setting.
Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with
a pump octane of 87 or higher mixed with
a premium -cycle air cooled mixing oil or
equivalent at a 50:1 gasoline/oil ratio.
Clean the intake cover.
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.
Service the air cleaner element.
Tighten or replace spark plug. (See page 1.)
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.
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.
