If your YZ is a crankcase induction model say 1990 to 2008, it's usally 500ml by the book
Hello: You need to let us know the year of your YZ80********
The amount of oil that a Yamaha yz80 will holdÊdepends on the year. A 1996ÊYamaha yz80 crankcase holdsÊhalf a quart of oil.Ê
Kalf a quart
60-70mph
65 MPH
The seat height on a 2001 Yamaha yz80 33.6 in.
32:1 yamalube
i am pretty sure it is 1974
20:1
4 LB-008267
2 stroke
It is a 1985 Yamaha YZ80
a half of quart 2 stroke .....2 stroke oil mixes with the gas only!!! use automatic transmission fluid type f for your gear oil..DO NOT USE 2 STROKE OIL FOR GEAR OIL!!!!