Maintenance & Technical > KX250 / KX125

bottom end/bearings

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Kawasakinut:
  got my bottom end apart. wondering if i should replace all the bearings  within the cases. if so how do  i get these bearings out? also should i replace all the seals and how do you tell if the seals are bad? check out the glob of metallic slug in the bottom of the tranny -side- case- (3rd picture).

gowen:
How long do you want to own the bike? If you plan on riding/owning it for awhile. I'd replace them all. You can rent a bearing puller from an auto parts store or just buy one from Sears. If I have the cases split, I always replace the bearings. Just cause they are there and easy to reach while the crank is split. I try to avoid splitting the cases more than once a year. The sludge can come from alot of stuff, like the clutch, gear wear, dirt coming through the oil plug. It looks like years of buildup.

Kawasakinut:
haha question # 2 whats the best way to get the screws out of photo #1 after they are stripped?

Jeeks:
You need an impact driver.  Once they are out, tap out the bearings from the other side.  It's not always rocket science.  lol

gowen:
An easyout might be your best bet.

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