Mercury 90hp 3 cyl 2 stroke 1995 - rebuild

[mimm83]

Hi,
Does anybody knows the tolerances for the bore of a Mercury 90hp 3cyl 2stroke (9793577 THRU 0P016999). Like "roundness" and min and max values for the bore?
does anybody know the torque spec for all the engine bolts? I'm finding hard to find a matching repair manual in the internet.

 

[Texasmark]

In my Service Manual's spec. section:
Bore diameter standard: 3.50"
Taper/out of round condition (fail point) 0.003" (3.503")

Piston diameter standard: 3.495
0.015 oversized: 3.510"
0.030 oversized: 3.525"

That doesn't exactly answer your question but should get you in the ball park of whether or not you have a problem.

 

[mimm83]

In my Service Manual's spec. section:
Bore diameter standard: 3.50"
Taper/out of round condition (fail point) 0.003" (3.503")

Piston diameter standard: 3.495
0.015 oversized: 3.510"
0.030 oversized: 3.525"

That doesn't exactly answer your question but should get you in the ball park of whether or not you have a problem.

Thanks!!! This is what I was looking for.