Got a good deal on a 2004 WR450 that is extremely difficult to start. e-start is out of the question
and my foot still hurts from attempts to light it with the kickstarter, which was successful only
twice. Not just that it is hard to start, it is extremely hard to kick... as in excessive compression.
Guy that sold it wasn't the original owner and said he thought the exhaust cam had been "changed
to be like YZ450" So, that sounded to me like someone monkey around with the cam timing.
When the bike is running it idles nicely and seems to run OK but we can't have these starting
issues so I popped the valve cover off to take a look. What I found makes no sense...
What you see in the picture is with the mark on the rotor aligned at top dead center, cam lobes
pointing away from each other.
None of the marks on the cams align with the edge of the head, and I count 15 pins between marks...
Yikes! No wonder this thing is so hard to start! What were they thinking? If moving it one pin is
good, two pins must be better? Not only that but the overall timing is wrong now as well.
Planning to set it back to proper factory timing but this is a new low for bad, misguided "performance