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View Full Version : What about that premix tank on the Yamaha


RudeDog666
10-11-2009, 10:08 AM
I have a 1980 YT125 that's blowing more blue smoke out the tailpipe than any thing I've ever seen. I'm running 24:1 mix and I've heard most people remove the premix tank on the 2 strokes.

Is it safe to do on this model? Or should I just leave the tank full and run straight fuel?
Thorpe
10-11-2009, 10:58 AM
You can block off the oil injection, remove the tank and run premix... Thats what I did on my Zinger...
RudeDog666
10-11-2009, 03:12 PM
What do you use to block off the oil?
Thorpe
10-11-2009, 04:56 PM
I took the oil pump apart and used a bolt and locknut with a rubber washer, tack welded the nut to bolt and for extra good measure followed by sealing with epoxy... (probably wicked overkill)
RudeDog666
10-11-2009, 07:45 PM
Thanks for helping me out Thorpe.
Thorpe
10-11-2009, 10:43 PM
No problem... With a good quality 2 stroke oil, I would feel pretty safe running it at a 40:1 ratio... Thats what I am doing with my Zinger (amsoil)
RudeDog666
10-12-2009, 06:33 AM
That seems pretty lean on the lube? Do you run that ratio in all your 2 stroke engines (weed wacker, leaf blower etc.)?
Thorpe
10-12-2009, 08:50 AM
Yep... No problems... My ice auger runs the best getting it leaned out a bit... But the amsoil says you could run at 100:1, but I just cant do that....
RudeDog666
10-12-2009, 05:19 PM
that's going to save me some cash on 2 cycle oil. Thanks!