For a Yamaha YZ125, the best oil is typically a high-quality two-stroke oil specifically formulated for dirt bikes. Look for synthetic or semi-synthetic options, as they provide better lubrication, reduce engine wear, and enhance performance. Brands like Motul, Maxima, and Bel-Ray are popular choices among riders. Always refer to the owner's manual for specific recommendations regarding oil types and mixing ratios.
30:1
Yamalube motor oil.
32 to 1
Premix (mix oil and petrol at a certain ratio) Contact you local Yamaha dealer for the best mix.
No oil filter, the YZ125 is a 2 stroke.
135mm (80-150)
4ozs to 1 gallon
Yamalube Trans Oil. You should be able to get it at your local Yamaha dealer. ROCKETMAN
well on my 87 yz125 i take the drain plug out of the bottom of the motor to drain it then put it back in... then there is a little black like cap by the kick starter where you put the oil back in i use gear saver for mine...
2 strok(gas mixed with oil)
no.
No, a cylinder from a 2001 YZ125 will not fit a 2004 YZ125. Although both models share the same basic engine design, there are differences in the cylinder and porting that can affect compatibility. It's always best to use parts specifically designed for the model year of your bike for optimal performance and reliability.