Home › Forum › Ask A Member › Evinrude Lightwin 3012 Gear Case teardown › Re: Evinrude Lightwin 3012 Gear Case teardown
June 6, 2017 at 12:01 am
#59081
I could be totally wrong, but I’d guess the match marks are there so when it assembled prior to machining, it will have an indicator of which way it was assembled when it was line bored / reamed. That way, when it gets disassembled and serviced, it can go back together the correct way. If it was assembled 180 degrees off it would cause a bind / premature wear if it wasn’t machined perfectly on center, which it wasn’t.
-Ben
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