MSD 8560 Chevy V8 Marine Certified Distributor Installation - Manual (Page 5)

INSTALLATION INSTRUCTIONS 
M S D I G N I T I O N
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ADjUSTING THE SLIP COLLAR
Chevy Model, PN 8562 only
To set the adjustment of the slip collar on the PN 8562 Distributor, MSD offers a special tool, the 3-In-1
Distributor Set Up Tool, PN 8599. If the tool is not available, follow this procedure.
1. Loosen the slip collar and insert the distributor into the engine until it bottoms out against the oil
pump drive.
2. After it bottoms out, raise the distributor 0.010" - 0.030" then slide the slip collar down into position
and tighten it.
checkIng gear Mesh
It is recommended to check for proper gear mesh between the cam gear and distributor gear. To do
this, coat the distributor gear with moly grease and install the distributor. Next, crank the engine and
pull the distributor out. The gear pattern will show on the grease. The proper mesh will leave an even
pattern in the middle of the gear. Adjust the slip collar to obtain the correct mesh.
Checking the Oil Pump to Distributor Shaft Overlap
The proper overlap between the distributor shaft and the oil pump shaft is very important. The tounge of
the distributor shaft should fit into the groove of the oil pump shaft by at least 1/4". To check this:
1. Measure the distance between the
base of the slip collar to the tip of the
distributor shaft (Figure 8).
2. Using a straight edge, measure the
distance from the intake manifold
distributor flange to the top of the
oil pump shaft (Figure 8).
3. Take the two measurements and
subtract them. The difference is
the overlap. If there is not enough
clearance or too much clearance,
a different oil pump shaft is
required.
Figure 8 Measuring Oil Pump Shaft Overlap.