Apologizes if I am posting in this wrong forum but having some issues with my 07' yz450. My bike was running fine after (dun dun duuun) I decided to upgrade my water pump to a Boyesen water pump.in addition to rebuilding my water pump.
I took off the right clutch side crank case cover and replaced the two water pump seals and the impeller bearing. After that was done I re installed the impeller shaft following the service manual and put the new water cover and the crank case cover back on with a new gasket. I put new coolant and oil into the bike and it kicked over just fine. I ran it for about 30 seconds before I realized the new crank cover gasket was not fitted correctly so some oil was leaking out from the seam of the case and the cover. Irritated I decided to wait a few days to fix it.
Re drained the fluids and finally got the gasket in place and attempted to kick over the bike but now the kick starter will jam. Feels like it is hydro locked and feels like it is in gear. It will sometimes let me kick it fully but then on subsequent kicks it will jam. If I give it gradual pressure it will engage but a "normal kick" will jam it. I did a quick push start and it almost fired up but was nervous about trying to do it again if something was screwed up in the engine.
I thought I had installed the impeller shaft or jammed the water pump gear but after taking it off it spins fine. I also took off the crank cover again removing the impeller shaft and the kick starter is still jammed.The water pump gear looks fine. Also tried adjusting the clutch, and inspecting the kick starter spring but still nothing.
From looking on here it appears it could be a ton of things but wondering if anyone had any ideas?