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Page 19SKU 97005 For technical questions, please call 1-800-444-3353.
TROUBLESHOOTING
Problem Possible Causes Probable Solutions
Engine misres Spark plug wire loose.1.
Incorrect spark plug gap or 2.
damaged spark plug.
Defective spark plug wire.3.
Old or low quality gasoline.4.
Incorrect compression.5.
Check wire connections.1.
Re-gap or replace spark plug.2.
Replace spark plug wire.3.
Use only fresh 89+ octane 4.
unleaded gasoline.
Diagnose and repair compression. 5.
(Use Engine will not start:
COMPRESSION RELATED
section.)
Engine stops
suddenly
Low oil shutdown.1.
Fuel tank empty or full of impure or 2.
low quality gasoline.
Defective fuel tank cap creating 3.
vacuum, preventing proper fuel
ow.
Faulty magneto.4.
Fill engine oil to proper level. 1.
Check engine oil before EVERY
use.
Fill fuel tank with fresh 89+ octane 2.
unleaded gasoline.
Test/replace fuel tank cap.3.
Have qualied technician service 4.
magneto.
Engine knocks Old or low quality gasoline.1.
Engine overloaded.2.
Incorrect spark timing, deposit 3.
buildup, worn engine, or other
mechanical problems.
Fill fuel tank with fresh 89+ octane 1.
unleaded gasoline.
Do not exceed equipment’s load 2.
rating.
Have qualied technician diagnose 3.
and service engine.
Engine backres Impure or low quality gasoline.1.
Engine too cold.2.
Intake valve stuck or overheated 3.
engine.
Fill fuel tank with fresh 89+ octane 1.
unleaded gasoline.
Use cold weather fuel and oil 2.
additives to prevent backring.
Have qualied technician diagnose 3.
and service engine.
Follow all safety precautions whenever diagnosing or servicing the
equipment or engine.