General Care and Maintenance
5-19
Owner’s/Operator’s Manual
Problem
Probable Cause
Corrective Action
Excessive fuel
Engine timing
Time engine.
consumption (cont.) incorrect
Choke not properly
Adjust choke as required.
adjusted
Float level too high
Reset float level as required. (See
Engine Operation and Maintenance
Manual.)
Blue exhaust
Engine oil level too
Drain off excess oil.
smoke
high
Oil too thin
Drain and replace oil. (See Engine
Operation and Maintenance Manual.)
Oil overheated
Check cooling system.
Black or gray
Fuel mixture too
Adjust carburetor.
exhaust smoke
rich
Choke stuck
Lubricate and adjust.
Poor carburetor
Readjust carburetor. (See Engine
setting
Operation and Maintenance Manual.)
Carburetor fuel
Adjust float in carburetor.
level too high
Flame arrestor
Clean or replace as required.
clogged
White exhaust
Engine misfiring
See Engine Operation and
smoke
Maintenance Manual.
Spark plugs dirty
Clean, adjust gap or replace.
or not gapped
correctly
Low oil pressure
Insufficient oil in
Check and add correct grade and
crankcase
viscosity oil. Visually check engine
for leaks.
Excess oil in
Check and remove excess amount
crankcase
of oil. Check for cause of excess oil
(improper filling, bad fuel pump, etc.).
Diluted or improper
Change oil and oil filter, being sure
grade and viscosity
to use the correct grade and
oil
viscosity oil.
Oil leak in pressure
Inspect all oil lines and tighten all
line
connections as necessary.
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