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sure that all tenninals of the primary wire at the ignition coil
and distributor are clean and tight.
Ignition Timing (6-Cyl. Engine). Set the octane selector at "0"
on the scale (fig. 40), and attach a Neon Timing Light to No.1
spark plug. Start the engine and run it at idling speed. Loosen
distributor clamp and rotate the dis-
tributor body clockwise or counter-
clockwise until the steel ball in the
flywheel lines up with the pointer on
the flywheel housing. Tighten the
distributor clamp screw.
Octane Selector. When changing to
a grade of fuel with a higher or lower
octane rating it may be advisable to
advance or retard the spark slightly.
Advance the spark to take advantage
of higher octane fuel and retard it
to prevent excessive detonation with
lower octane rated fuels. Note the
Fifl.
40-0dan. S.'ector-
position of the octane selector scale
6 Cyl. Enfline
(fig. 40), loosen the clamp bolt and move the distributor as-
sembly toward advance or retard as desired and tighten the
clamp bolt securely. By adjusting the spark in this manner it
can be readjusted to the original setting when desired without
special ignition. timing equipment.
Ignition Timing-265 Cu. In. V-8 Engine. Attach a timing light
to the No.1 spark plug and spark plug wire, using an exten-
sion to make contact, and to a good ground. Disconnect
.-
vacuum advance, start engine and run at 1,000 R.P.M. with
light aimed at top left of harmonic balancer. Loosen distribu-
tor clamp and rotate distributor body until the mark on the
hannonicbalancer lines up with the 8° BUDC mark on the
timing tab welded to the front
cover.
This is 4 marks toward
the center of the vehicle from the "0" mark.
Tighten distributor clamp screw,remove timing light, con-
nect vacuum advance and reset engine idle.
Ignition Timing-322 Cu. In. V -8 Engine
"1. Connect a 12-volt power timing light to No. 1 spark
• 32 •
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