does the gas and oil need to be mixed together in a kfx-80? if so ,what is the ratio of oil and gas?

 

does the bike a seperate 2cycle oil tank? if not it needs mixed ratio varies check the manual cant say ratios vary

 

Korr is right^
Look for a separate oil reservoir tank. Look in your manual or on-line. As for ratio if pre-mix, I usually run about a 28-35/1 in my old Husky. I recommend the Lucas synthetic. Kinda pricey, but nice to your engine and good clean burn.

 

thanks korr &jeffzx9. i found an oil tank under seat beside battery. what kind of oil goes in tank? i do not have a manual. kfx-80 belongs to my grandson. will yamalube 2-cycle racing oil 2-r be okay to use? does plain gas go in the fuel tank? thanks again.

 

I either run belray or yamalube in the banshees, or the other dirt bikes. I ran 40:1 premix most of the time. My CR480 liked a little leaner still.
Since you have the oiler system, ie separate oil tank, keep that filled with 2 stroke oil, put regular gas in the gas tank.