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Jetting for rm 125.

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I understand it will need tweaking so just get me close. I have a 1994 rm 125 no leaks at all. New oem piston with 15 hours on it, break in only. Oem gaskets were used so no thin gaskets for comp. Jetting is stock from factory and I'm running 93 octane gas at 20:1 with maxima formula k-2 oil. I want to run 32:1 but I just went with 20:1 to be safe for break in. Also my elevation is 1240 feet. All help is greatly appreciated thanks

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If it's running, it is close. You need to read the FAQ at the top about jetting. It will tell you how to adjust the jets to get it just right. Someone could give you numbers to try, but each motor has it's own setting that makes it run perfect. Whatver mix ratio you decide to go with, KEEP IT! Don't switch around with the ratios. Pick one you want and jet it for that.

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