Humming noise in clutch 03 yz450f

I am have this noise in my clutch when I release the clutch lever. It is a humming noise. The noise is only if I am starting for a dead start. The noise continues until the clutch is released fully. The bike may have only 100 miles on it. I for the most, part only use it for hill climbing and only ride it for 13 seconds at the most at a time. (well I warm it up and ride it around to warm the engine up.) Anyone else experence this sound?

Thanks Brian

...As I mentioned in the other "clutch problem thread", do a search and they are many threads that will have the fix you are looking for. This was very common for this year YZ. As a matter of fact, I had taken my bike back to the dealer and they installed the fix under the guise of warranty repair

All the 03 yz 450s makes that noise get the WRs first clutch plate it is a little smaller and there is two rings that go in there that will help with that sqeek noise go away

Thanks for everyone help.

I have an 07 yz450 and have the reverse of your problem, when I have my clutch out it's noisey, when I pull it in, it's quiet, pulled my clutch plates out and found my basket was mashed, quick $200 fix!

All the 03 yz 450s makes that noise get the WRs first clutch plate it is a little smaller and there is two rings that go in there that will help with that sqeek noise go away

Same as the '01 fix:

http://www.thumpertalk.com/forum/showthread.php?t=461631 The inner friction plate, boss spring and plate mentioned here will help. My '03 had a full Hinson in it when I bought it (lucky me), and did not have that problem, but the original build of the bike was known for it.

I have an 07 yz450 and have the reverse of your problem, when I have my clutch out it's noisey, when I pull it in, it's quiet, pulled my clutch plates out and found my basket was mashed,
To an extent, this is an entirely normal noise:

http://www.thumpertalk.com/forum/showthread.php?p=5362282#post5362282

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now