Decompression mechanism

[jfor]

Does anybody have a picture of what a decompression mechanism looks like? I was in the process of tearing down my motor in my 400ex when I found out that it has a 400 big bore kit. I am trying to determine if the cam that is in there is the stock cam or an aftermarket cam. I think it is an aftermarket cam because after removing the cam I don't remember seeing anything else like a decompression mechanism.

[400exrider707]

Originally posted by jfor
Does anybody have a picture of what a decompression mechanism looks like? I was in the process of tearing down my motor in my 400ex when I found out that it has a 400 big bore kit. I am trying to determine if the cam that is in there is the stock cam or an aftermarket cam. I think it is an aftermarket cam because after removing the cam I don't remember seeing anything else like a decompression mechanism.

It is large and bulky you couldn't miss it. There would also be a little tiny spring and dowel pin in the head where it would rub against. If its an aftermarket cam, that should be removed and there should be a tiny little hole in the head. It would be on the right hand side if your sitting on the quad. (opposite of the cam chain). Its not very big.

[jfor]

Sweet... Didn't see any of that! So... I am pretty sure it is an aftermarket cam I just need to determine wha aftermarket cam it is.

[400exrider707]

Originally posted by jfor
Sweet... Didn't see any of that! So... I am pretty sure it is an aftermarket cam I just need to determine wha aftermarket cam it is.

Should be some sort of marking or part number on the cam, see what it is and post it up here.