MSD 85551 Chevy V8 Pro-Billet 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 of the PN 8361, MSD has supplied a lockout
mechanism.
1. Remove the two Allen head screws that hold the
advance canister (Figure 11).
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 12). 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 12 Checking Installation of the Lockout Plate.
Figure 11 Removing the Vacuum Canister.
RELUCTOR
PADDLES
CANISTER
SCREWS
MAG PICKUP
PLATE
SNAP
RING