buzzingb....

....If I know I have to store an engine....and it won't be used for a period of time,
I'll flush the crankcase with a few ozs. of kerosine and Marvel oil 50/50. Then I
flush the carb with rubbing alcohol to remove the castor, which will cause sticking
if it is left too long. I am going to experiment with a squirt of pure silicon spray
into the carb after the cleaning....

There are many other flushes that will do the same thing.

FBD.