11-1-3
ELECTRIC
SYSTEM
When there is no spark, the following must be checked.
1)
Disconnected cable leading to ignition coil, spark plug or contact breaker.
2)
Broken ignition coil winding, causing short circuit.
3)
Wet
or
oil soaked spark. plug cable.
4)
Dirty
or
wet
spark plug.
5)
Incorrect spark plug electrode gap.
6)
Short connection
of
spark plug.electrodes.
7)
.Pitted
or
fused
breaker points.
8)
Sticking breaker
arm.
9)
Leaking
or
grounded condenser.
10)
Incorrect ignition timing.
11-2
ENGINE
MISSES
1)
Incorrect spark plug electrode gap.
2)
Worn and leaking ignition cable.
3)
Weak spark.
4)
Loose connections
in
ignition wire.
5)
Pitted
or
worn breaker points.
6)
Gasoline containing water.
7)
Poor compression.
11-3
ENGINE
STOPS
1)
Fuel tank empty. Gasoline contaminated
with
water, dirt
or
gum.
2)
Gasoline vaporized
in
fuel lines due to excessive heating around engine. (Vapor lock)
.3)
Vapor lock in
fuel
lines or carburetor due to the use of too volatile winter
gas
in the hot
4)
Air vent hole in fuel tank cap plugged.
5)
Seizure in rotating
or
sliding pairs
in
engine due to lack
of
oil.
6)
Ignition troubles.
season.
114
ENGINE OVERHEATS
1)
Crankcase oil supply
low.
Replenish immediately.
2)
Incorrect spark timing
3)
Low
grade gasoline
is
used.
Engine overloaded.
4)
Restricked cooling air circulation.
5)
Cooling air partly misdirected causing loss to cooling efficiency.
6)
Cylinder head cooling fins blocked with dirt.
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