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06 CRF450R stalls when I shift into first gear

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I have a 2006 CRF450R instantly killing it from neutral to first gear with the clutch fully in. The bike is on the ground. Can somebody help me please.

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Your clutch is not set up correctly or it may be time for a new clutch basket. Worn basket will causte the clutch plates to hangup and not fully releast the clutch etc. If you rev it up a little bit does it still do it? Or if you rev a bit does it lurch forward before stalling??

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Your clutch is not set up correctly or it may be time for a new clutch basket. Worn basket will causte the clutch plates to hangup and not fully releast the clutch etc. If you rev it up a little bit does it still do it? Or if you rev a bit does it lurch forward before stalling??

agreed, time for clutch work

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Ill test it out and see what happens if I rev it up. Ill try some adjusting as well. The last time I rode it was a test drive when i bought it used and it seemed to be fine.

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I rev'd the engine a little then shifted into first and it was normal. I tried shifting at idle and it was normal. At one point I felt the engine idle try to scoot me forward while the clutch was in. I don't know what its problem was but its fine now. I have a funny feeling when it's time to go riding the 450 is going to act up again. Isn't that what always happens?

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What happens is your "clutch pack", if sat too long, will stick together killing the bike instantly when you put it into first with the clutch pulled in. If the bike creeps when in first, usually it's a warped friction plate in the clutch. A grooved clutch basket can cause this as well. Pretty easy to pull the clutch cover, and pull the pressure plate which will enable you to pull all the steel plates and friction plates out to inspect, and if you notice notching in the clutch basket, you know that can be one of the causes. Check the friction plates to make sure they are all within specs, and check the steel plates for warpage.

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