Governor Adjusting - Yamaha MA190 Service Manual

3-7 Governor adjusting

Governor adjusting:
1. Dismount the air cleaner.
2. Loosen the nut M6. Be sure that the carburetor throttle valve is fully open.
3. Rotate the governor arm shaft fully to the right (governor fully open position) to bottom by
pressing governor support, and retighten the nut.
Nut:
10 N·m
4. Check to see that the governor support and throttle valve move freely.
5. Check the maximum engine speed.
Throttle valve
Throttle control assy.
Adjusting speed
Don't adjust the speed because it is fixed speed. If necessary, please have it to the theorized deal-
er for adjusting. If the user has a proper tools and repairing capacity, only permit the following
operation:
1. Start the engine and allow it to warm up to normal operating temperature.
2. If the maximum speed is not conformed to specified value, adjust throttle control and hole
position of the support by adjusting governor spring.
MA190 engine maximum speed:
3800±100 rpm
WARNING
The engine has adjusted to specified speed when manufactured in the factory, if the wrong
adjusted from the user to cause the performance of the engine, it is not covered the war-
ranty of our company.
Governor spring
19
3-7 Governor adjusting
Governor support
Governor arm
Nut M6