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7
Symptoms
Checking
methoh
Checking
criteria
El
Remedies
B-4 Abnormal running
rpm of the engine does not increase
0
Governor system
Mounting failure
(Throttle valve
does not work
normally)
Confirm mounting
of the governor
system
In case of mount-
ing failure, adjust it.
r
1
Adjust mounting
of the governor
system
Intake/exhaust
valve
I
Valve opening/
closing timing
failure
--‘I-’
I
Measure tappet
clearance
If the clearance is
different from the
standard, adjust
the clearance or
replace it.
Normal :
0.1 +O.O2mm
I
Carburetor
Air cleaner
Mixing ratio of air
with fuel is not
normal.
I
Check the
carburetor, or
the air cleaner
In case the mixing
ratio of air with
fuel is abnormal,
adjust the mixing
ratio or clean the
carburetor and the
air cleaner.
r-
Muffler
Exhaust valve
G
Carbon deposit
Chock the muffler
and the exhaust
valve
In case of carbon
deposit, clean the
muffler and the
exhaust valve.
I
Clean the muffler
and the exhaust
valve
Load
Over load
I
I
I
Confirm the load
In case of overload,
modify the load to
the rated one.
50Hz: 800W
60Hz: 1ooow