Ahh missed the part about being a yamaha! Yeah those are the older style kill switches and uses the “key clip” that slides up under the top…That definatley is your issue.. walmart should have those. Or find a buddy with a jet ski and take theirs!! they dont need to be out anyways…Last edited by JSLAW on August 8th, 2010, 3:04 am, edited 2 times in total.