Recommended Oil:
Yamalube 4 (10W30) or SAE 10W30 Type SE Motor oil
Oil Capacity:
Total: 0.75 L (0.79 US Qt)
At Oil Change: 0.65 L (0.69 US Qt)
Source(s): Yamaha PW-80 Service/Owners Manual
Under the seat theres two nuts un screw those and that is your oil resivoir wich injects into your carb fill that resivoir with 2 stroke oil and u can tell wen its full by looking at the window on the side for the dip stick i put regular 10w 30 and mine runs fine
2.33 Ounces
All the Yamaha PW80's and PW50's are 2 strokes, so they dont have engine oil. You mix 2 stroke engine oil into the petrol using 25:1 mixing ratio as im pretty sure you know this already. But they do have transmission oil. You can use 4 stroke engine oil for this, or alternatively, use proper transmission oil.
32:1 to 36:1 but you shouldn't have to mix it. The PW80 comes with a Autolube oil injection system eliminates the need to premix fuel and oil.
.69 US quart .79 if disassembled
Yamahalube 2s (autolube 2 stroke injector oil)
Any 4-stroke 10W-30 motorcycle oil can be used in clutch case.
ITS MARKED ON THE SIDE OF THE CRANKCASE 650ML
Yamalube motor oil
Yamaha's Yamalube, 2 stroke oil is a good choice.
2-Cycle Engine oil.
In a stock PW80, there is no need to mix oil with the fuel. The oil is injected into the carburetor throat by the oil pump. The factory ratio is estimated to be about 24:1, which is quite rich. On bikes with the oil pump disabled, ratios as lean as 40:1 have been tried with success. The optimum ratio will ultimately depend on the elevation and the jetting used There is an oil tank under the seat
SAE 10w30 oil or Yamaha 4 Stroke Engine Oil