The piston seems to be attached by flattening the connecting rod through a hole in it ...( is this possible )i have another one in pieces and its the same but cant seem to find it at the moment..also the head is all steel and it seems that it might have had a tank attached ...an 09 ??..the handle at the bottom moves freely like an old arden ignition engine..any help would be greatly appreciated ..and yes i hit my thumb hard OUCH >>>and dont need to be reminded unless you must