MF on a mates 24,he was having problems with the needle sticking so I told him I would set up a small tac hammer on a pivot point and run a string up the handle bar so all he had to do was pull the string, hammer would hit the carby and it would shake the needle loose. He was so excited when he realized that a tap on the carby and he was up and running again. This one was stopping in the middle of a job and he was getting frustrated