Hi new i just picked up a 85 yamaha 200 moto 4 and the trans was shot i was wondering if the trans out of a 86 will fit?any help would be great

 

You can go to an online microfiche on several websites like ronniesmailorder.com, bikebandit.com, and several others. Choose your vehicle, and compare part #'s on each year model. Here's a link to ronnies: Ronnie's Mail Order for atv parts, atv tires, snowmobile, watercraft and motorcycle featuring an OEM microfiche parts finder.

I did a quick search, and ronnies does not show a YFM200 moto4 for the 86 model year.