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B-9 Abnormal running
Engine noise is too loud
I
Engine oil
Engine oil has not
been changed
periodically
r
(Abrasion of rub
hing section)
I
If the engine
oil is conta-
minated or
if the engine
oil has not
been changed
periodically,
replace it.
In case the
element has
been broken,
replace it.
I---- -
B-l 1 Abnormal running
7
The lubricating oil becomes diluted
and its consumption rate increases
I
bolts and nuts
become lower.
Burning or
n
breakage
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Carburetor
I
Cylinder,
Piston,
Piston ring
I
Fuel
In case of
burning or
breakage,
adjust or
replace them.
Mixing rate is too
high md al the same
time the cngino has
tmen run 100 long
under a light lord.
ve, replace them
Abrasion
1
If the measured
valves are not
within the range
of operational
limits, adjust or
replace them
In case
of do-
fective fuel,
replace it,