Yamaha - Thermo switch assy - 6H4-82560-00-00Yamaha Thermo Switch Assembly Engine Temperature Monitoring 6H4 82560 00 00 Overview Overheating issues arent something you want to guess about, and this switch is one of the key pieces that keeps you informed. Ive seen motors run fine mechanically but still throw warnings because the thermo switch wasnt reading right. Its a small part, but it plays a big role in protecting your engine when temps start to climb. When its working correctly, youve got