Yanmar 4JH2E Service Manual page 128

Chapter 3 Fuel Injection Equipment
16. Governing Mechanism
----------------------------------------------------------------4JH2-UTE
Engine starting
Flyweight
Governor sleeve
Starting lever
Mi
(pivot)
Control sleeve
Fig. 26 Combination governor operation: engine starting
Depressing the accelerator pedal lightly at en-
gine starting results in the control lever shaft
assembly pulling the tension lever to the left
(Fig. 26). and through the action of the starting
spring (leaf spring) the starting lever pushes
the governor sleeve. Through this movement
the ball joint, with point M2 as the fulcrum,
moves the control sleeve to the position where
excessive fuel for starting can be obtained, and
the engine can be easily started.
Printed in Japan
AOA1029-9109SP
3-63
Starting spring
Ball joint
Plunger
Tension lever
Once the engine has been started. the centri-
fugal force generated by the flyweights pushes
the governor sleeve against the weak force of
the starting spring. The control sleeve is then
moved in the fuel-decrease direction and the
supply of excessive fuel for starting is com-
pleted.