PN8420 Datasheet, PDF (1/2 Pages) Mallory performance club – MSD Cap-A-Dapt

MSD Cap-A-Dapt
PN 8420
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Parts Included:
1 – Adapter Base, PN 8446
1 – Rotor (two pieces), PN 8421
1 – Cap – PN 8408
2 – 5/8” Rotor Screws
2 – 3/4” Rotor Screws
2 – Belleville Washers
INSTALLATION
1. Leave the spark plug wires in place and remove the
distributor cap.
2. Before removing the rotor, position it in a way
that its location can be noted. Mark the position
of the rotor tip then remove the rotor (Figure 1).
3. InstalltheAdapterBaseontothedistributormakingsurethe
key way is aligned properly. Push and rotate the retaining
spring clips until they clamp to the distributor housing.
4. Before installing the rotor base, determine which length
rotor screws are needed for your distributor. Figure 2
shows the two different rotor screw retainers offered
on different MSD distributors.
Figure 1 Marking the Position of
the Rotor Tip.
ROTOR SCREW
RETAINER
USE 5/8" SCREW
ROTOR SCREW
RETAINING NUT
USE 3/4" SCREW
Figure 2 Determining Rotor Screw Length.
5. Install the Rotor Base with the correct length screws and Belleville washers to the advance plate.
Install the rotor next and its tip should be pointing to the same mark you made in step 2.
6. Install the distributor cap.
7. Transfer the plug wires one at a time in the proper order from the original distributor cap.
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