Service Manual

Engine Starves on Acceleration
Possible Cause Remedy
Plugged fuel filter Replace fuel filter
Improperly adjusted carburetor Adjust carburetor about 1/8 turn
Engine is Hard to Start
Possible Cause Remedy
Fouled, improperly gapped, or broken spark plug Clean or replace spark plug; set gap to
0.018-0.023 in. (0.45 to 0.58 mm)
Plugged or waterlogged fuel filter Replace fuel filter
Improperly adjusted carburetor Adjust carburetor
Clogged muffler Clean or replace muffler
Faulty primer or primer/fuel lines improperly installed Correctly install primer/fuel lines or
replace primer
Incorrect air gap between flywheel and ignition module Set ignition module air gap to
0.010-0.015 inch (0.254-0.381 mm)
Faulty ignition module Replace ignition module
Worn or improperly adjusted carburetor jet needle Adjust or replace needle
Faulty carburetor diaphragm Replace carburetor diaphragm
Faulty fuel pump diaphragm Replace fuel pump diaphragm
Low compression Replace piston ring or cylinder
Engine Stalls
Possible Cause Remedy
Dirty or plugged air filter Clean or replace air filter
Fouled, improperly gapped, or broken spark plug Clean or replace spark plug; set gap to
0.018-0.023 in. (0.45 to 0.58 mm)
Plugged fuel tank cap vent Clean fuel tank cap vent
Incorrect fuel mixture Drain tank; refill with correct fuel mixture
Improperly adjusted carburetor Adjust carburetor
Plugged muffler Clean or replace muffler
Plugged fuel line Blow out fuel line
Faulty ignition module Replace ignition module
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