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SERVICE
DIAGNOSIS
TROUBLE
PROBABLE
CAUSE
REMEDY
Motor fails
to start.
Fuel
tank
empty.
Ignition
switch
off.
Motor not choked.
Carburetor,
Over choking.
Spark
plug.
Magneto.
*Plugged
or
frost-covered
pickup
in fuel
tank.
*Plugged
impulse
hole
in
carburetor
or
misaligned carburetor
manifold
gasket.
*Frozen
gas
line
or
ice
in filter
or car-
buretor
Fill with correct
fuel
mixture.
Turn
on or check for short.
Move choke
lever down.
See
carburetor
adjustments.
Unchoke,
open
throttle
and pull starter
3
or
4 times.
If
motor
is
continually
flooding
check for plugged
carbure-
tor breather.
Remove plug,
clean and adjust.
Re-attach
wire and hold
metal
seat
of plug against
motor.
Pull
starter.
A blue
spark should
jump
gap between
electrodes.
Disconnect wire from spark
plug.
Hold
so
metal end
is
%
inch from
clean metal
surface.
(Away
from
gas
tank.)
Pull starter.
There should be
a
strong
spark across the
gap.
If no spark the trouble is breaker points,
coil,
condens-
er, shorted wire,
01'
switch.
Remove
and
clean.
Check for ice, water, and dirt in fuel
tank
filter
screen
and water
trap
felt.
Remove
and
clean.
Check for ice, water, and dirt in fuel
tank filter
screen and water
trap
felt.
Remove
and
clean.
De-ice
additive
used
in prescribed
proportion
will
counteract
this.
(One
teaspoon
to
a full
tank of fuel.)
6
*Probable causes
indicate conditions
which may
be
experienced during cold weather
operation.
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