Home 1994 – 2001 Yamaha YZ125 – Exhaust Valve Governor – Removal – Inspection – Installation 9 - The exhaust valve governor is a stack of thrust bearings, washers, and a collar, all held together with a single pin at the end

9 – The exhaust valve governor is a stack of thrust bearings, washers, and a collar, all held together with a single pin at the end

1 - Your exhaust valve governor sits at the bottom front of your right crankcase

9 – The exhaust valve governor is a stack of thrust bearings, washers, and a collar, all held together with a single pin at the end

8 – Install the governor, and test the operation
10 – Disassemble the governor, and lay each piece out in order, then clean and inspect each piece while you reassemble