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4.9
PROBLEM
CAUSE
CORRECTION
Excessive fuel consumption
(continued)
Blue exhaust smoke
Black or gray exhaust smoke
White exhaust smoke
Low oil pressure
Choke not properly adjusted
Float level too high
Lube level too high
Oil too thin
Oil overheated
Fuel mixture too rich
Choke locked
Poor carburetor setting
Carburetor fuel level too high
Clogged flame arrestor
Engine misfiring
Spark plugs dirty or not gapped
correctly
Engine overheating
Insufficient oil in crankcase
Adjust choke as required.
Reset float level as required (See your
engine manual).
Drain off excessive oil.
Drain and replace oil (See your engine
manual).
Check cooling system.
Adjust carburetor.
Lubricate and adjust.
Readjust carburetor (See your engine
manual).
Adjust carburetor float.
Clean, replace as required.
See your engine manual.
Clean, adjust gap, replace as required
Check and add correct grade and
viscosity oil. Visually check engine for
leaks.
4.9
PROBLEM
CAUSE
CORRECTION
Excessive fuel consumption
(continued)
Blue exhaust smoke
Black or gray exhaust smoke
White exhaust smoke
Low oil pressure
Choke not properly adjusted
Float level too high
Lube level too high
Oil too thin
Oil overheated
Fuel mixture too rich
Choke locked
Poor carburetor setting
Carburetor fuel level too high
Clogged flame arrestor
Engine misfiring
Spark plugs dirty or not gapped
correctly
Engine overheating
Insufficient oil in crankcase
Adjust choke as required.
Reset float level as required (See your
engine manual).
Drain off excessive oil.
Drain and replace oil (See your engine
manual).
Check cooling system.
Adjust carburetor.
Lubricate and adjust.
Readjust carburetor (See your engine
manual).
Adjust carburetor float.
Clean, replace as required.
See your engine manual.
Clean, adjust gap, replace as required
Check and add correct grade and
viscosity oil. Visually check engine for
leaks.