YES!!!!!
YES I CLEAN MINE ABOUT EVERY 2-3 GALLONS ITS MOSTLY TO INSPECT EVERYTHING AND MAKE SURE THERE IS NO ISSUES. ILL CLEAN THE INSIDE WITH FUEL I ALSO USE SUPER FINE WOOL AND CLEAN THE TOP OF THE PISTON AND HEAD BUTTON TO GET OFF BURNT FUEL RESIDUE. AFTER ALL DONE ILL SRAY THE INSIDE WITH 1 SPRAY OF MARVEL MYSTERY OIL JUST TO LUBE THE INTERNALS. I FIND THNAT WHEN THEYRE CLEAN THEY JUST RUN ALOT MORE CRISP. THINK ABOUT IT WE CLEAN OUR REAL CAR'S FUEL SYSTEMS RIGHT??