9
Troubleshooting
– 52 –
Area
Engine
Malfunction
Engine stalls soon
Engine stops abruptly
Improper idling
(lrregular engine speed)
Poor power or acceleration
Irregular noise or vibration
around the engine
Excessive engine oil
Engine overheating
Excessive fuel consumption
Excessive black smoke
(Abnormal exhaust)
Possible cause
• Fuel cock is not open
• Insufficient fuel
• No fuel
• Seizure due to insufficient or
deteriorated engine oil
• Loose V-belt
• Improper accelerator adjustment
• Clogged air cleaner
• Looseness of engine mounting
bolts
• Others
• Engine oil leak
• Insufficient engine oil
• Blower housing and cooling
fin clogging
• Fuel leak from fuel system
• Clogged air cleaner
• Choke knob is pulled (choke
valve is closed)
• Poor compression
• Clogged air cleaner
• Excessive oil intake
• Bad fuel
Corrective action
Open fuel cock.
(
Page 16
)
Fill. (
Page 14)
Fill. (
Page 14)
Check and add oil.
(
Page 32)
Consult dealer.
Adjust.
Consult dealer.
Clean or replace.
(
Pages 39)
Check and carry out additional
tightening.
Consult dealer.
Check and repair.
Fill. (
Page 32)
Clean. (
Page 42)
Check and repair.
(Consult dealer.)
Clean or replace.
(
Pages 39)
Push choke knob back fully.
(
Page 19)
Check and repair.
(Consult dealer.)
Clean or replace.
(
Pages 39)
After checking adjust oil
volume. (
Page 32)
Change fuel.