Tach for an '81 OMC 70 hp

64osby

Admiral
Joined
Jul 28, 2009
Messages
6,826
Found an Old Aqua Meter #639 tach that would look great on my project.

The issue is will it work. The motor is a 6 pole from what I've seen. The tach is a 6 pole.

The only reference I've found so far was this chart (Thanks Lakeshadow)



fetch


The chart ends in 1978. I know the motor was redesigned after '78.

Does the redesign make this tach a no go, or does 6 pole mean this tach should work?
 
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