Check out Squirrels forum! forums.thetoyz.com This vid is on engine dissasembly for a nitro rc engines. It involves the removal of the carburetor or carb, cleaning out the piston and the sleeve, removing the backplate, the pull start roto start pullstart rotostart ez start toger drive etc, one way bearing high speed needle hsn, low speed needle lsn middle speed needle msn, flywheel fly whyeel clutch nut, clutch shoes, springs, clutch bell cb, small or large block, grub screw, nitro, crank shaft, collar, cooling head exhaust port intake ports, engine head spacers, cleaning, lubricating or lubing, and reassembly….