TROUBLESHOOTING
1
Start
Engine
Difficultly
(By using recoil starter)
TROUBLE CAUSE REMEDY
Fuel supply
is
not
smooth
or
no fuel supply
1.
Fill fuel, open fiiel cock.
1.
There
is
no enough fuel in fuel
tank
and
2.
Dredge air vent.
fuel cock is closed.
E
3.
Clean
first
and then dredge
Q)
2.
Air
vent
in
the
fuel
filler
cap is clogged
.....
~
4. Readjust
or
clean,
blow
to
get
~
VI
3.
Fuel cock
is
clogged
.....
Cii
through
ra
:l
4. Improper
or
clogged main oil
flow
hole
a.
....
VI
Q)
5.
Dismantle needle valve and repaii,
bO
..1::
:l
.....
5.
Needle valve is
not
closed properly
or
dean, blow
to
get through c.
..1::
~
.....
start
hole
is
clogged
.....
·~
6.
Repair
float
ra
bO
a.
6.
Float
is
damaged
or
sticking
VI
c
0
ra
.....
E
3:
1.
Replace
.....
bO
Fuel supply
is
normal upply
c
0
c
0
z
:.c
2.
Replace
·v;
.....
1.
Fuel
is
too
filthy
or
deterioratd
VI
Q)
Q)
E
3.
Drain extra fuel,
diy
up spark plug
.....
a.
0
2.
There
is
water
in fiiel
E
Vl
electrodes
0
3.
Too much fiiel in engine
u
4. Select properfhel brand corresponding
.....
Q)
"0
4.
Wrongfiiel
brand
with
the requirements.
c
~
ra
~
Spark plug
is
in bad conditions
E
.....
.....
I
ra
1.
Too much carbon deposit and
dirt
0
..1::
a.
1.
Clear away.
z
OOVI
:.c
Q)
around electrodes
- c
2.
Replace spark plug.
E
ra=
Q)
E c
2.
Electrodes are birni damaged seriously
.....
.....
0
3.
Adjust
to
proper value.
VI
>-
0
·-
or
insulators damaged.
VI
z
~
>-
Q)
c.
.....
3.
Improper electrodes gap .
a.
:l
VI
Cii
0
Normal spark plug
:l
c
1.
Replace
....
Q)
ra
.
!:
1.
High tension line is damaged .
2.
Replace
E
c~
.....
2.
Ignition coil
is
damaged
0
0
.....
3.
Replace
·-
ra
z
VI
Q.
~
VI
3.
Magneto loses magnetism
4. Adjust gap between ignition and
.....
I
4.
Wrong
gap between ignition coil and
..1::
flywheel
.!:!!>
I
flywheel
1.
Replace
13
c
ra
1.
Piston ring
is
worn
to
or
even over its
2.
Replace
0
E
·v;
E
.....
wear
limit
VI
Q)
0
3.
Clear up carbon fouling
Q)
.....
z
.....
~
a.
.....
2.
Piston ring
is
broken
E
VI
:l
E
4. Tighten
with
a gasket in
0
>-
0
Q)
u
c.
c
....
3.
Piston ring
is
sticking
.....
a.
:l
~
5.
Check cylinder gasket,
and
the flatness
Q)
:l
..._
VI
"0
VI
; c
4. Spark plug
is
not
installed tighten
or
of
the surface by which cylinder block
c
Cii
0 0
>.
u
·-
without
a gasket
contact-
ins
with
cylinder
head.
:l
c~
u
....
0 c
-
ra
·-
bO
5.
Air
leakage between cylinder block and
Tigiiten cylinder head bolts in
ra
VI·-
E
E
c
.....
.....
Q)
cylinder head
stipulated
order
to
stipulated
torque
.
0
.....
0
I
c
z
..1::
.0
.!:!!>
6.
Air
leakage in
the
valves
6.
Check valve. Clearance and tightness,
<(
I
repair
if
necessaiy.
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