PN85501 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 57 - 5 20 0 • F AX ( 91 5 ) 8 57 - 33 4 4

Figure 6 Changing the Advance Stop Bushing.

SELECTING THE ADVANCE STOP

BUSHING

Three 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. Do not over

tighten.

LOCKING OUT THE CENTRIFUGAL

ADVANCE

1. Remove the advance components including the

springs, weights and the advance stop bushing

from the advance assembly.

2. Remove the roll-pin from the drive gear and

remove the gear from the shaft.

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

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

bushing pin into the small hole on the advance

plate (Figure 7).

5. Install the locknut and washer to the advance stop

bushing pin. This locks the advance in place. Do

not over tighten.

6. Install the drive gear and roll-pin.

Figure 6 Locking Out the Centrifugal Advance.

Figure 7 Locking Out the Advance.

Figure 5 Advance Stop Bushing Chart.

BUSHING SIZE

APPROXIMATE

CRANKSHAFT

DEGREES

Red-Smallest

Silver

Blue

Black-Largest

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