Posted December 09, 2001 - 10:51 PM
As a result the cam has been running out which has caused scoring on the cam and more importantly destroyed the head and cam holder.
Is it possible to get the head welded and machined? How much is a replacement head? Is this a common fault with the WR400?
I think I was the first person to inspect the valves, therefore it was Yamaha who tightened the bolts.
Any help would be grateful.
Posted December 09, 2001 - 11:22 PM
Posted December 10, 2001 - 03:52 AM
Also whilst i was checking valves I noticed oil seeping out of the ignition cover holes when I removed the caps, should this be the case?