i have a 300 ex and the shaft that comes out of the motor 'to turn the front cog' will move in and out of the motor but the play is in and out not around it doesnt leak oil but it dont move more than half an inch

 

What is your question? I take it your referring to the counter shaft which has the front sprocket on it. Free play in and out is normal. Dose the transmission shift?

 

yes just like normal and i was talking about that shaft

 

Glad to hear. When I bought my 300ex the transmission did not shift.

 

that sucks how didd u get it fixed

 

I disassembed the motor and found my shift drum and shift forks were pretty worn out. I bought a complete transmission and drum on eBay, bought a Moose complete gasket kit, oem piston and rings, 2 intake valves (I cut new seats), spark plug, uni airfilter. The 300 run and shifts like new now. And all that was under $250!