bozla

How do I get this off?

impalabob64

iTrader: (2)

spray alittle wd40 ,then take a flathead screw driver wrap it with rag or towel ,hit it from the bottom it should pop out.

bozla

Cheers - worked a treat!

bozla

Another dumb question. How to remove the rear ball bearing in the crankcase?

V for Victory

I heat the crankcase in the oven until the metal expands then knock the bearing out.

Speedypeterb

iTrader: (16)

you can use the oven or if you have a gas stove works even faster. get the temp up to 275 300 degree i put a 2x4 on the ground and when the crank is heated up use gloves or oven mitt and hit the 2x4 with the flat part of the back plate area and it should fall out.

bozla

Nice. All done!

Another dumb Q: Are engine bearings standard?

ezveedub

iTrader: (17)

NO. What engine is it or meaure the outside, inside and width of the bearing. If its old, it maybe 13mm inner, later are 14mm, but like I said, measure it and post the size or the engine.

bozla

I want to put a bearing meant for a ninja engine into a mega zx21.?

ezveedub

iTrader: (17)

Got both engines, but I didn't check the ZX21 bearing size and I'm not sure if they are the same. ZX21 though can be different, since there are revised ones and different manufacturers.