Fit kawasaki kx 60 crank

something in engine is failing and it could be anywhere or any part sorry couldnt help you more

There should be no play up and down. Any play is coming from a worn out needle bearing on the crank. A bit side to side is okay and normal. The crank will need to come out then it gets pressed apart and fitted with a new bearing. Price out the difference in cost of fixing the crank verses getting a new $170 crank assembly.What probably happened is a broken piston ring extended into a cylinder port and the piston against the ring is what gouged the cylinder and head. Please rate my answer.

piston kit, wrist pin bearing, top end gasket kit and a honing tool to clean your cylinder is about it I would probably buy new air filter and spark plug if I was doing it, but not essential ?

muffler bearings definately

It looks like Babbitt's has the parts. Pistons and rings are sold in 3 sizes; standard, .020 oversize and .040 oversize. I would suggest you have the cylinder bored and install new piston, rings and needle bearing.
Go to www.babbittsonline.com/pages/parts/viewbybrand/default.aspx
You might want to install new crank bearings and seals as well but that involves an engine teardown. Please rate my answer. Thanks.

buddy you have to split the engine in half to do this also heat the bearing up which will open them up buddy

The worn shift fork is the problem. Normally a shift fork will never show any wear. When a fork gets bent is when wear begins to show. If a good shift fork is set side by side with a bent fork it is very hard to see any difference. The bend is so slight that it is usually impossible to discern. Put in a new fork and the shifting problem is history.

Now would be a good time to install new crank bearings and new crank seals as well.

To be honest if this was me I personally would replace bearings and seals and give whole engine good check over.May save some hassle later depending on your circumstances.