TROUBLE
SHOOTING
~rocedures
of
diagnosis
for
finding
out
causes
of
trouble
and
their
probable
cauoes
are
discribed
as
follows:
1.
Engine
does
not
start
or
hard
to
start
111
Remove the
carburetter
float
chamber
and
check
for
fuel
flow,
if
fuel
is
not
supplied
enough i
1-1.
Clogged
fuel
line
1-2.
Clogged
fuel
tonk
cop
vent
hole
1
-3.
Clogged
fuel
cock
1-4.
Clogged
carburetter
line
or
stuck
needle
volve
121
Remove the spark plugs. attach them
to
the spark plug cops, turn in the
ignition
switch and
rotate
the cronk shaft
with
starter
motor
while
the I
-I
elect
rods
are
grounded.
If the spark plugs
do
not
spark
well
or
nil;
2-
1. F
aulty
spark plug,
Ito
make ' sure, check the spark plug
with
spark plug tester.1
2-2.
Sooty
or
wet
spark plug
2- 3.
Contact
breaker
point
2-4.
Faulty condenser
2-5
Incorrect
adiustment
of
contact
breaker
point
2-6.
Short
circuit
or
breakage
in
ignition
coil
or
wiring
2-7.
Damaged comCination switch
131
Check
compression pressure
at
the
cy
l
inder
with
a compression
gouge
and
if
lock
or
nil
of
compression
is
indicated
in
either cylinder i
3-1.
I
ncorrect
tappet
clearance
3-2.
I
ncorrect
seating
of
valves in
valve
seats
3-3.
Excessive
wear
in valve
3-4.
Excessive
wear
in
piston ring , piston cylinder
3-5.
Blown
out
cylinder
head gasket
3-6
.
Seized
valve
in
valve
guide
·
3-7.
Faulty
valve
timing
141
Start
engine
following
the
procedure
of
starting but engine seems to start but
won't continue running i
4-1.
Too
wide
opened
choke shutter in
cold
weather
4-2
. W i
de
opened
air
screw
of
carburetter
adiusting .
air
.
screw
4-3
. Damaged
carburetter
i
nsulator
Or
gasket
177
" .
~:
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