new lower needle bearing

[jcoolrocks]

Could anyone tell me how to get the crank shaft apart. I need to change the lower needle bearing.

 

[Bikeguy Joe]

This will get you started...
http://motorbicycling.com/f4/bicycle-motor-total-tear-down-389.html

 

[jcoolrocks]

I have the engine apart I just need to know how to get the crank separated

 

[wildemere]

You will need a big press and then a jig for reassembly.

Then you need to source a bearing, good luck with that.

A new crank is easier.