Kubota WSM B2050 Workshop Manual page 88

B2050, B2350, B2650, B3150, WSM
(Overloaded Operation)
The amount of the movement of the fork lever
assembly is limited with the fuel limitation bolt (10) 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 (8) into
the floating lever (7), the floating lever pushes the fork
lever 1 (6) 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 the time, the maximum torque limiter (1) prevents
superfluous fuel supply and suppresses the generation
of black smoke.
(1) Max Torque Limiter
(6) Fork Lever 1
(7) Floating Lever
(8) Torque Pin
(9) Fork Lever 2
(10) Fuel Limitation Bolt
1-M3
ENGINE
(a) Distance to which torque
pin (8) pushes fork lever 1
(6) out
(b) Increase of fuel
9Y1210982ENM0005US0
KiSC issued 03, 2014 A