it's in your clutch, either broken spring or bad bearings. taking the clutch bell off is a one screw event, getting to it is a 9 screw process.
take the cooling head off, this lets you get to the engine mount bolts.
remove the engine mount bolts, 4 of them ,two on each side of the block
DON'T remove the engine bolts from the bottom of the chasie or you will have to re-aling the clutch/spur gears!!!
undo the throtle/break elbow (the 90 deg. thing with one phillips screw)
take off the exaust spring
the block will get "hooked up" on the chasie, just use a flat screw driver to pry it out
it sounds worse than it is
now you can get to that easy one screw on the clutch
good luck