B&M 77101 STARTER, FORD, 3/8 DEPTH FLYWHEEL, 289, 302, 351W, 164 T MANUAL - Manual (Page 3)

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generally prevent you from being
able to return your starter: With
the installation procedure complete,
start the engine several times.
Remove the starter. After cranking
the engine multiple times, you
should be able to inspect the
witness pattern on the pinion gear to
check for proper engagement. The
gear should show wear from the
outer face to between 1/4” & 3/8”
back towards the body of the starter.
If the mark exceeds 3/8” in length,
remove the mounting block from the
starter and install the shim ring and
outer shim. This will move the pinion
away from the ring gear .060”, or
1/16. If the witness pattern is less
than 1/4” or the starter skips or
grinds during engagement, most
likely the wrong application starter is
being used.
STEP 6. Connect the solenoid
switch wire. With the amperage
being considerable (~30A) to pull
the bendix, B&M recommends 12
Ga. wire as a minimum. Figure 6
shows wiring without a remote
solenoid, Figure 7 shows wiring
with a remote solenoid. While your
B&M starter does not require a
remote solenoid, it is generally
easier to keep as much of the
original wiring as possible. Note: If
your original starter had a second
terminal, or “R” terminal, this can
generally be omitted. Please see trouble shooting information at the
end of this procedure for further
information.
STEP 7. Connect the main cable to
the starter. Please see Figures 6
and 7 for reference. Due to the high
amperage required to turn the
Figure 4: Calculating Pinion Engagement
Figure 5: Starter Shim Assembly, ( If Required )