is this a no go?

There is a chip on out put shaft upper case half. It feels smooth to the touch but, its fairly deep. Also there is some wear on the side of the crank case upper half. Is this case half reusable?

What kind of bike? Id have the crankshaft checked

kz750 b4

Is there a hole in the case for a pin to keep that bearing from spinning?

It appears the bearing had seized at least slightly and spun. When you install your new bearing tighten everything and make sure you cant move the bearing by lightly tapping the outter casing.
It should remain tight. With a new free spinning bearing, it shouldnt stress the case anymore.
Bottom line is, that bearing needs to be tight when cases are tightened.

OldSchoolZ wrote: It appears the bearing had seized at least slightly and spun. When you install your new bearing tighten everything and make sure you cant move the bearing by lightly tapping the outter casing.
It should remain tight. With a new free spinning bearing, it shouldnt stress the case anymore.
Bottom line is, that bearing needs to be tight when cases are tightened.

dumb question: could you use some kind of adhesive "dots" when you install the insert so it can't spin while it breaks in?

Ive seen them loc tited before to hold the,not sure if I agree with it though

well while im here im going to take the transmission apart and the manual says to get new circlips can i use any circlips or just oem from Kawasaki?

Id go oem

oldschool are you talking about the waer in picture 5043?

yea, I was looking at the aluminum that has been scored by the outer bearing spinning.
I was pretty sure you were referring to an input or output shaft for the tranny.
Another thing I've seen done to take up space on a spun bearing was to take a center punch(pointed) and centerpunch a small mark where the bearing makes contact with the case. I'de make about 10 punch marks evenly spaced in a circle. This will push a little bit of the aluminum upwards and take up the gap made by the spun bearing. I've done it before and worked fine, some use a small bit of locktite in conjunction with the punch marks, its actually a decent fix for no money. I suspect it would be a very long time before you have to worry about a new bearing trying to spin.

No that picture is of the crank shaft. Number 1 is where the chunk of metal is missing and number 2 is where the wear is. Sorry that was my fault.