Checking the bearing and gears on a 1976 yamaha yz80

This is how I check the gears on a gear case I bought on ebay for grinding and proper function of the gears before splitting the case if necessary. This engine will be going in a 1978 rear mono shock yz80.

[@quadvloggs6876]

Super clean motor!

[@jesusrobles7718]

Is tht th same as a 94yz80

[@fdrc8099]

This is an air cooled 80. The cases are different because of the liquid cooling and power valve. It will wind up pretty fast and with the 2 stroke improvements I do, (gear for gear) it will stay along side the newer ones.