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Early 7.5 OB crankcase sizing

All outboard, inboard and aero questions answered here.
ALSO Veco, Torpedo, Fury, & Stallion

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Early 7.5 OB crankcase sizing

Postby fast rigger » Sat Sep 06, 2008 5:34 pm

I'm trying to resurrect an old 7.5 OB that is missing a crank and a front housing. How do I find out if my crankcase takes a 15mm or a 17mm crank? Do I measure the inside diameter of the case? I've been trying to figure this out by looking at the exploded view of the 8701 and 8792 OB's but to no avail!
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Postby MECOA » Sat Sep 06, 2008 8:15 pm

Measure the ID where the front and rear covers fit. If they are the same diameter it is the 15mm, if one side is larger it is the 17mm
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