Spark Plugs - Hudson 1933 Eight Owner's Manual

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H U D S O N E I G H T
Crank the engine by hand until the breaker arm fiber block of points "D" is
on the highest point of the cam. Loosen screws "E" one-half turn and adjust
points "D" to exactly .020" by turning the eccentric screw "F." Tighten screws
"E" and recheck opening to be sure it is exactly .020".
Synchronize Breaker Points
Turn the engine slowly with the hand crank until the D. C. 3 and 6 mark is
exactly in line with the pointer on the inspection hole. This should require
only one-quarter (90°) turn of the crank.
Loosen screws "G" one-half turn and turn breaker point support plate
clockwise to the extreme limits of the screw holes. Turn breaker point support
plate counterclockwise until the points "H" just begin to open. This point
must be determined accurately. Tighten screws "G."
The illustration shows the rotor arm in the proper position for firing on
number one cylinder. The cable to number one spark plug should be in the cap
socket directly above the rotor point. The spark plug cables should be in the
cap in the order 1-6-2-5-8-3-7-4, following in a clockwise direction.
When setting the gap of the spark plugs, make all adjustments by moving
the side wire. Do not bend center wire as this may break the porcelain.
To clean the carbon from the porcelain, fill the lower part of the plug with
alcohol, liquid metal polish or equal parts of ammonia and water, and allow
it to stand for a few seconds. Take a piece of wire covered with one thickness
of cloth and rub the carbon from the insulator, wiping thoroughly dry before
replacing the plug in the engine.
Spark plugs should be changed every 10,000 miles for better engine
performance. New spark plugs give quicker starting, increased power, smooth
running and a saving in gasoline.
A D J U S T M E N T
Remove the spark plug from number one
cylinder and hold a finger over the plug
hole. Crank the engine by hand until a rush
of air is felt. Continue to turn engine slowly
until the D. C. 1 and 8 mark is exactly in
line with the pointer on the inspection hole
as shown at "A."
Loosen clamp screw "B" and turn distrib-
utor clockwise to the full limit permitted by
the slot in the clamping plate ."C." Turn the
distributor slowly counterclockwise until
the points "D" have just begun to open.
Care must be taken to determine this posi-
tion accurately. Tighten lock screw "B."

Spark Plugs

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