I just got a cherry 1985 250r. The guy i bought it from never even went through a tank of gas with it so he couldn't even tell me what he mixed it at. It is bone stock (still even has original tires). I noticed that right above the gas tank there is a little sticker that says "mix ratio 20:1 only." I want to mix it a little leaner , like 32:1, and i just want to know if this is alright? I mix my banshee at 50:1 and it runs a lot better than before when we ran it like 32:1. Any advice is greatly appreciated.
Thanks

- 1985 ATC250R- bone stock
- 1992 Banshee - toomey T5 pipe kit, dyno-jet
kit, durablue heavy duty +4" axle,
holeshots on douglas rims, pro design
shift lever, + more
-1985 ATC200S- cobra exhaust
-1985 Xr200- bored .40 over

 

I run mine about 32:1.

 

I also run 32-1

 

I always ran YAMALUBE synthetic at 50:1. Never had any problems. Cylinder always looked good on teardown. Wish I still had my R.
Exer

 

I run 24:1 but I think you can go leaner. My R runs great with that mixture so I haven't tried leaning it out

85 250r mostly stock
98 Prairie 400

 

Essentially, its the same thing as the Banshee. Run it at 50:1 with good oil just as you would do with your Yamaha. I run both my 250R's at 50:1 and have never had a problem. I go to 32:1 when I use my alcohol carb. Good luck with the R.


Can I convince you to travel to southern NY to do some ice racing? My freinds and I want to get others to do some ice racing this winter in Greenwood Lake NY (by NYC). Actually, maybe we can come closer to you if we have another mild winter.

 

I use amsoil with 50:1 and its runs great!

'82 250r