60
Trouble
Cause
Remedy
En
gin
e c
ann
ot b
e s
ta
rt
ed o
r s
ta
lls s
udden
ly
No fuel in carburetor
1.
No fuel in fuel tank
2.
Fuel tank valve not opened
3.
Fuel tank valve clogged
4.
Float chamber needle valve hole clogged
5.
Main jet orifice clogged
1.
Refueling
2.
Open the valve
3.
Clean fuel tank and fuel tank valve
4.
Disassemble and clean the carburetor
5.
Disassemble and clean the carburetor
Th
er
e i
s f
ue
l in c
arb
ur
et
or
Sparking normal in high voltage cable and
no sparking in spark plug
1.
Oil stained spark plug
2.
Broken spark plug magnetic core or broken electrode
3.
Carbon deposit in spark plug electrode
4.
Incorrect spark plug gap
1.
Remove, clean and dry it
2.
Replace spark plug
3.
Clean out carbon deposit
4.
Adjust the gap.
Normal sparking to spark plug, poor cylin-
der compression
1.
Leaking cylinder head gasket
2.
Loose spark plug
3.
Seized piston ring
4.
Excessively worn piston or broken piston ring
5.
Serious cylinder wearing
6.
Leaking intake pipe
7.
Damaged crankshaft sealing
1.
Tighten screw or replace gasket
2.
Tighten spark plug
3.
Clean off carbon deposit in piston ring and ring groove
4.
Replace piston and piston ring
5.
Replace cylinder body
6.
Tighten or replace rubber ring
7.
Replace sealing
