83503 datasheet(4/8 Pages) MALLORY

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INSTALLATION INSTRUCTIONS

MSD • W W W. M S D PE R F OR M A NC E . C OM • ( 91 5 ) 8 5 7 -5 2 0 0 • F AX ( 9 15 ) 8 57 - 33 4 4

Figure 6 Changing the Advance Stop Bushing.

Figure 7 Removing the Retaining Sleeve.

SELECTING THE ADVANCE STOP

BUSHING

Five different advance stop bushings are supplied

in the distributor kit. The distributor comes with a

Blue (21°) bushing already installed. If a different

amount of centrifugal advance is desired, follow the

next procedure to change the bushings. The chart in

Figure 5 gives the size and approximate degrees for

the corresponding bushings.

CHANGING THE ADVANCE STOP

BUSHINGS

1. Remove the distributor cap and rotor.

2. Remove the locknut and washer on the bottom of

the advance assembly (Figure 6).

3. Remove the bushing and install the new one. Install

the washer and locknut.

LOCKING OUT THE CENTRIFUGAL

ADVANCE

1. Remove the cap and rotor.

2. Remove the advance springs, weights and the

advance stop bushing from the advance assembly.

3. Remove the roll-pin from the shaft and slide the

retaining sleeve down. It should not be necessary

to remove the gear (Figure 7).

4. Slide the shaft two inches out of the housing.

5. Rotate the shaft 180° and insert the advance stop

bushing pin into the small hole on the advance

plate (Figure 8).

6. Install the locknut and washer to the advance stop

bushing pin.

7. Install the retaining sleeve and roll-pin.

Figure 8 Locking Out the Centrifugal Advance.

Figure 5 Advance Stop Bushing Chart.

BUSHING SIZE

APPROXIMATE

CRANKSHAFT

DEGREES

Red-Smallest

Silver

Green

Blue

Purple

Black-Largest

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