Kubota WSM F2880 Workshop Manual page 65

F2880, F3680, RCK72-F36, RCK72R-F36, RCK60-F36, RCK60R-F36, WSM
(Overloaded Operation)
The amount of the movement of the fork lever
assembly is limited with the fuel limitation bolt (2) and can
not be moved in the direction of the fuel increase.
As overload reduces the centrifugal force of the
governor weight, which is pressing the torque pin (5) into
the floating lever (6), the floating lever pushes the fork
lever 1 (3) in the way to increase the fuel supply with the
help of the torque spring tension.
The fuel supply increases (b) in relation to the degree
of the torque pin motion, thus preventing the engine
speed from dropping.
At this time, the maximum torque limiter (1) prevents
superfluous fuel supply and suppresses the generation
of black smoke.
(1) Max Torque Limiter
(2) Fuel Limitation Bolt
(3) Fork Lever 1
(4) Fork Lever 2
(5) Torque Pin
(6) Floating Lever
1-M6
ENGINE
(a) Distance to which torque
pin (5) pushes fork lever 1
(3) out
(b) Increase of fuel
KiSC issued 04, 2006 A