Originally Posted by Dirtdobber

I got the 21-7fms that I only have 3/4 of a gallon of fuel through it.I went to the track for the first time to finish break-in and have noticed oily dirt collecting around the rubber boot on the carb and at the base of the carb.It's only a small amount and just need to know if it's anything to worry about.

Originally Posted by houston

from me ?

if its from me it is probably just the lubrication that i use to assemble the engine . it will collect a little dust

Originally Posted by Dirtdobber

Got it from Amain. I've been breaking it in on the street and haven't noticed any problems until I got it in the dirt.