9.
BREAKDOWN LIST
A.
Gasoline engine
(1) Hard to start machine or fail to start
Breakdown
phenomenon
Cause
Solution
no
spark at
plug
spark plug
carbon deposition of
spark plug
clear away carbon
excessive
or
too
small clearance of
spark plug
adjust clearance to
0.7
～
0.8mm
Insulation damage of
spark plug
replace spark plug
Others
breakdown of ignitor
replace ignitor
weak magnetic force
of flywheel
replace flywheel
Sparkin
g at plug
good
compressi
on
suck excessive fuel
into cylinder
take off spark plug
and dry it and put it
on
poor quality of fuel
with water and dirt
replace fuel
Loosen oil
drain
screw
at
the bottom
of
Carburetor
.No
oil
shedding.
needle valve block
clean
or
replace
carburetor
normal oil
supply but
poor
compressi
on
piston ring abrasion,
loose spark plug
replace
Air leak of cylinder
head
screw tigh
wrong
air
valve
clearance or timing
clean, readjust and
reassemble
normal
ignition
and
oil
supply
poor contact of high
voltage cable and
spark plug
replace and connect
Failure
of
stop
switch , short circuit
clean
breakdown of oil alert replace
