can't shift from 1st to 2nd gear

[saca]

Hi! I can't shift from 1st to 2nd gear , but if I put it on the stand shifts fine.

N to 2nd and up is good but if I shift down to 1st and up to 2nd it is not working. Any help or advice appreciated. Thanks!My bike is a 06'YZ450F

[fritzelman]

With it running or shut off?

Check the oil for metal fragments?

My guess is your clutch is too tight for a simple fix, but I'm thinking it might be something with your shift cam.

[saca]

The clutch is like new , the oil was nice and clean, When I test it on the stand it was running.

[grayracer513]

Check the condition of the "stopper lever", item 21 on page 4-70 of the manual. The '06 uses a ball bearing on the end of the lever instead of teh more conventional roller, and some have fallen apart, causing a variety of problems.

[matt4x4]

this thing:

[saca]

Thanks!

[saca]

Hi! I did Check the stopper lever but it looks good. Any other advice?????

[grayracer513]

Well, as long as it's open, try shifting it and look for problems with the operation of the linkage. Remember to turn the main shaft to align the gears as you shift.

[matt4x4]

It may "look good", but did you remove it and see if it "works good"?

Could be a bent shift fork...