Yanmar 4LHA-HTP Operation Manual page 393

Chapter 3 Fuel Injection Equipment
6. Governing Mechanism
Negative torque control stroke operation
Flyweight
Negative torque control spring
ig. 42 Operation of governor equipped with negative torque control device: negative torque control
:
stroke operation
When the engine speed exceeds Ni r.p.m (re-
fer to Fig. 37) the centrifugal force of the
flyweights will continue to increase, resulting
in compression of the negative torque control
spring.
The torque control lever will therefore pivot
counterclockwise around point B (the torque
Starting lever
(pivot)
Control sleeve
3-1-36
Stopper pin
Torque control lever
[
control lever stopper pin), pivoting the starting
lever counterclockwise around N/te to move the
control sleeve in the fuel-increase direction.
The increase in the fuel injection quantity is de-
termined by the negative torque control stroke
S3 (refer to Fig. 41).
i 4LHA Series ,