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Ferguson Tractor TO-20 Operation and Maintenance Manual

Possible Cause
1. Loose connections
at ignition
switch
2. Ignition switch not turned on
3. Cracked rotor
4. Dirty breaker points
5.
Points not opening
6. Faulty condenser
7. Faulty coil
8. Loose
wiring at condenser
9. Distributor is wet
Possible Cause
1.
Condenser terminals are loose
2. Condenser is defective
(F) NO SPARK
Possible Remedy
Check wiring
Turn on switch
Replace
Clean same
Check timing-See page 15
Replace same
Replace same
Check wiring
Remove cap and dry thoroughly
(G) WEAK SPARK
Possible Remedy
Tighten
3. Loose connection on ignition wiring
Replace same
Tighten
4. Ignition system wires defective
or wet-
causing leaks
5.
Breaker points burned or pitted
6. Ignition coil defective
7.
Distributor cap defective
Replace same, or dry with clean cloth
If
not serious, file to flat edge ; otherwise replace
Replace same
Replace same
(H) GOOD SPARK
Possible Cause
1. No fuel
2. Faulty spark plugs
3. Engine flooded through excessive use of
choke
4. High level of float
5.
Empty fuel tank
6. Fuel vent blocked
7.
Blocked fuel line
8.
Dirt or water in carburetor
9.
Poor fuel
Possible Remedy
Open
fuel valve, or fill
tank
Clean or replace plugs
Do not choke, but open throttle
See your Ferguson Dealer
Fill same
Clean thoroughly
Check fuel line and clear same
Clean carburetor-See page 18
Use proper grade
Possible Cause
(I)
CONTINUOUS MISFIRING OF ONE OR
MORE CYLINDERS
Possible Remedy
1. Spark plugs of incorrect type
2. Improper mixture
41
Replace
with proper type-See page 22
Spark
plug color gives indication
of fuel mix-
ture :
If insulator is light brown, mixture
?,
nd
plug are
both
correct.
a-If insulator is white, mixture is too lean and
plug is too hot
b-If insulator is blackened or oily, mixture is
too
rich and plug
is too cold
•