i just picked up a 79 honda 50cc 2 stroke scooter. i was wondering if anyone knows how and if the thing that i think mixes the oil and gas on top of the motor needs to be serviced. it has a clamp around it, but when i loosened the clamp i could only get the oiler thinger to spin a little. this is my first old honda moped project so any other advice is also welcome. as always, thanks.