OK thanks guys!! Couple more questions.. How does the carb come off of these engines?Does it slide off after the one nut is removed or does it need to screw off or??(3.0cc .18 SH engine) Also, can they be torn down and put back together w/all the same stuff, or do ya need to use new gaskets or anything when putting them back together??Thanks, as usual, for all the helpful info!!