Motorcycles, Snowmobiles, Go-Carts, ATV's and Golf Carts - fitting a clutch on spiral geared crankshaft?

i need to put a clutch on my 8hp briggs & stratton motor, but the crank shaft has a spiral gear on the end instead of the nornal round grooved crankshaft end. My question is.. Is there a way to get the clutch fitted on this crank shaft? or do i need to purchase a new not geared crankshaft?

HERES SOME PICS OF THE CRANKSHAFT!
http://i10.photobucket.com/albums/a106/probedude05/bodyandskidder320.jpg
http://i10.photobucket.com/albums/a106/probedude05/bodyandskidder319.jpg

We, meet again, Hey?
Interesting motor, never seen the likes.
I would say just off the top of my head that there's no way you're gonna get a clutch on that the way it is, but if you wan't you could get it turned down to the right DIA. on a lathe and then get it keyed it WAY too thick for most clutches anyway,it's about one inch right? most clutches are 5/8 or 3/4.
But also you'd need a threaded hole on the end too if it doesn't have one.
Tornerito

Thanks man :) If it needs to get lathed and keyed im probably better off buying a crankshaft that doesnt have the gear on the end right? i searched a few places on the net and found that i can get a crankshaft for my motor for around 50 bucks. But do you think i can machine my crankshaft myself? like have the engine running while grinding it down? and then use a grinding wheel the right width the key it? If you think i can do it i will :D Also if i remove the crankshaft, how hard will retimming the engine be? Thanks alot for the help ;)

That engine at one time had a gear reduction box and that is the purpose of the beveled gear on the crank. As far as turning it down yourself...unlikely you'll get it right and it would likely cost you more to have it professionally turned down by a machinist. I'd go with the fifty bucks and the new crank. Be absolutely certain though that the new crank has all the right dimensions (crankpin dia., PTO bearing dia., magneto end dia. and throw)!!!

A new one is the best option, having it turned will cost more than 50. And make sure it is An IDENTICAL replacement, aside from the gears of course.

Jim