MSD 8383 Ford Y Block Ready-to-Run Distributor Installation - Manual (Page 6)

6 INSTALLATION INSTRUCTIONS
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VACUUM ADVANCE LOCKOUT
If you do not want to use the vacuum advance canister,
MSD has supplied a lockout mechanism.
1. Remove the cap, rotor and aluminum spacer.
Remove the two Allen head screws that hold the
advance canister (Figure 10).
2. Remove the snap ring that holds the magnetic
pickup assembly in place.
3. Gently lift up on the mag pickup plate and slide the
vacuum canister out.
4. Install the Lockout Plate in place of the canister.
Install the two retaining screws.
5. Install the supplied screw and washer through the
Lockout and tighten.
6. It is important to make sure the pickup plate is
parallel with the housing of the distributor (Figure
11). If it is cocked or slanted, the paddles of the
reluctor may contact the pickup. Check
the clearance by rotating the distributor
shaft. If necessary, use the supplied shims
under the Lockout hold-down to correctly
position the pickup plate.
Note: If no shims were required, use one
beneath the washer of the Lock-Out
Hold Down Screw.
Note: Do not forget to plug the original
vacuum advance hose.
Figure 11 Checking Installation of the Lockout Plate.
Figure 10 Removing the Vacuum Canister.
RELUCTOR
PADDLES
CANISTER
SCREWS
MAG PICKUP
PLATE
SNAP
RING