WARNING:
,
o
When testing
the
spark
plug,
never hold
the high-
voltage
wire
of the spark
plug
with
wet
hand.
o
Make
sure
there
is
no spilled fuel outside the
engine and that the spark
plug
isn't dipped
with
fuel.
o
To
prevent
fire,
keep
sparks far away from
the spark
plug
mount hole-:
II .
Low
gasoline
engine
power
output
TROUBLE CAUSE REMEDY
When tuming
throttle
greater,
speed increase
responds
slowly or
speed
is decreased
even engine
stops running.
Ignition
system
Incorect ignition
time
Readjust
ignition advance
angle
Fuel
supply
system
Air
in fuel line
or
fuel
line clogged. Exhaust
air or dredge fuel line
Main
oil flow
hole is not ad.justed
properly
Readjust
In
carburetor, needle valve
hole
and main oil flow
hole clogged.
Clean and blow to
get
through
Fuel cock is
clogged up. Clean, replace
damaged
part
Too much
carbon deposit
in
combusting chamber Clear away
Too
much car bon fouling in muffler
and exhaust
pipe.
Clear away
Air
cleaner is
clogged
up.
Clean air cleaner filter elemei
Intake
pipe
is leaking.
Repair or replace
Poor
compres
sion
Piston
or cylinder or
piston
ring is
wom Replace the wom
Air leakage from
the surface by
which
cylinder
block
contacting with cylinder head.
Replace
cylinder
gasket
Too big
or
too
small valve clearance Readiust
Valve
tightness
is
poor
Repair
35
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