Some newbie took off the carbs to clean (good idea) FORGOT to mark which goes to which( larger main jet). I have a 240 and a 220 I am looking for info. also looking to buy a good book so things do not happen agian. Thanks Steve

shouldn't both jets be the same, and don't matter which side the carbs go on just as long as you put the proper fuel line to the carbs.

no its correct that the jets are different, on a rotary valve motor the valve rotates and shuts fuel off first on one cyl. and the air. on the other one so you actually need to lean out the side that gets the air shut off because it will make the cyl. run much richer than the other one. so to answer you ? the richer carb. (the one with the 240 jet in it) will go on the mag side or the pull start side of the motor and the leaner one goes on the clutch side.

I guess I never knew that because my sled doesn't have the rotary valves on it but thats good to know for future sled I may buy.

yea, your welcome... changing them to 2 equal jets would give you a huge PITA lol definately hard to tune that way lol

Actually I found a web site that showes the 240 on the pto side (factory specs) Runs good now. Thanks for the input. Steve