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Old 01-01-2008, 12:23 PM   #1
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Default Dumb question

How do I get this off?
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Old 01-01-2008, 12:31 PM   #2
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spray alittle wd40 ,then take a flathead screw driver wrap it with rag or towel ,hit it from the bottom it should pop out.
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Old 01-01-2008, 12:58 PM   #3
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Cheers - worked a treat!
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Old 01-02-2008, 11:32 AM   #4
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Another dumb question. How to remove the rear ball bearing in the crankcase?
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Old 01-02-2008, 12:30 PM   #5
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I heat the crankcase in the oven until the metal expands then knock the bearing out.
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Old 01-02-2008, 01:56 PM   #6
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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.
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Old 01-02-2008, 02:55 PM   #7
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Nice. All done!

Another dumb Q: Are engine bearings standard?
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Old 01-02-2008, 03:10 PM   #8
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Quote:
Originally Posted by bozla View Post
Nice. All done!

Another dumb Q: Are engine bearings standard?
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.
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Old 01-03-2008, 10:05 AM   #9
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I want to put a bearing meant for a ninja engine into a mega zx21.?
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Old 01-03-2008, 03:38 PM   #10
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I want to put a bearing meant for a ninja engine into a mega zx21.?
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.
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