Originally Posted by havy
You wonn't go wrong if you clean it every race. If you don't clean it after every race/day of running, take out the fuel line and run out the rest of the fuel in the block, then use afterrun to avoid rust buildup on the crank.
Why not just run it again with the fuel lines in tact so you can also clear the gas-tank and lines?
But this is good to do. After your motor runs out of fuel, there is always fuel left. Go bring back to the starter box and try to start it and get the rest of the fuel out of the system. I also normally plug my finger over the exhaust a few times to help push air through to help gather the rest of the fuel.
Nitro Fuel attracts moisture. I would also purchase some after-run oil to be safe.