2000 300EX starting issue

Hello All!!

I have owned this bike for 6-7 years with no starting issues until now. When you press the starter button, the starter spins and all the gears below do too. I removed the mag side cover to look at things. I removed the flywheel where the starter clutch is attached. The starter clutch seems to work as it should. When you spin the flywheel, you can see that side of the crank moving and whatever the gear is you can towards the front of the crank moving also.

If you put the bike in gear and move the wheels, the crank and flywheel turn, but its not turning over the rest of the motor. I removed the forward valve cover to see if anything moves there, nothing does.

I had no issues when I rode the bike earlier in the day.

What other things should I be checking?

Thanks in advance for your help.

Steve