Draining CR450 oil


Dec 1, 2002
I'm going to help a guy put a Hinson clutch basket in his 450. Since it's not my bike, I'm unsure how to completely drain the clutch side of the engine. Can someone tell me which of those bolts or covers is the actual drain point? I know this sounds stupid, but he just bought the bike used and has no manual. The clutch is dragging and I suspect the basket is grooved.

High Lord Gomer

Poked with Sticks
Sep 26, 1999
That will completely drain the clutch and transmission oil. Since you're going to have to take off the right side cover, I'd throw in new water pump seals (it has two, an oil seal and a water seal) while you've got it off.

The CRF was the first of the 3 or 4 Hinson baskets that I've done where it really was necessary to heat the new basket on the stove and cool the gear in the freezer to make it easier to put together.

I didn't get new ones (and I'm not sure if you can), but the rubber bumpers inside mine looked questionable. If possible, I would suggest replacing those while you are at it.