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Y N
Y N
Y N
N Y
Y N
Diagnosis on engine overheating
Engine overheating
Check whether operation is correct
1. Check whether gasoline grade is
im
roper or stored for a long
time
2. Check whether the engine works
at high speed for a long time or
with overload during driving
Check cooling system
Air-cooled engine
Check whether heat sink is spotted or there
is too much oil stain
Clean
Check whether cooling fan or air
director is damaged (forcedly
air-cooled engine)
Inspection & solution
Check whether ignition is
timely conducted with a