Part IV Faults Diagnosis
- 22 -
4-5 Engine is easily to be flameout
4-6 Engine has no high speed
(Add new fuel oil)
(Refer to Section 3-4)
Engine has
no high
speed
Fuel oil is of poor quality/polluted
S
ark
lu
fault
or dirt
Silencer blocked
(Clean cooling fan and radiating fin)
Overheat of en
ine
(Refer to Section 3-7)
Improper regulation of speed regulator
(Alleviate load)
Overloaded
(Clean and regulate carburetor)
Fault of carburetor
(Clean air filter)
Air filter too dirt
(Refer to Section 3-6)
(Refer to Section 3-5)
Engine is
easily to be
flameout
Im
ro
er idle s
eed ad
ustment
S
ark
lu
dirt
or wet
(Adjust the height of the float of the carburetor)
Fuel level of carburetor too hi
h
(Refer to Section 5-2-4)
Insulator of carburetor dama
ed
Burnin
loss of electron ma
netic valve of carburetor
(Replace electron magnetic valve of carburetor)