Yamaha YFZ450/450R (2004-Present)
ALRIGHT SO, I WAS PUTTING MY HEAD BACK TOGETHER,,(oops friken cabs lock!) and when i finished , one of the valves was open! i took the cam covers off and on but still no luck, it seems the lobe is pushing agaisnt the shim i think thats what its called when i tighten the cover! helpppp
i have...