Kubota Z400-B Handbuch Seite 45

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O]09F035
4) Plunger Position
1. No fuel delivery
At the engine stop position of the control rod (3). the
lengthwise slot (1) on the plunger (2) aligns with the feed
hole (5). And the delivery chamber (4) is led to the feed
hole during the entire stroke of the plunger.
The pressure in the delivery chamber does not build up and
no fuel can be forced to the injection nozzle.
2. Fuel delivery
The plunger (2) is rotated (See figure) by the control rod (3).
When the plunger is pushed up, the hole (5) is closed. The
pressure in the delivery chamber (4) builds up and force­
feeds the fuel to the injection nozzle until the control groove
(6) meets the feed hole (5).
The amount of the fuel corresponds to the distance "Au.
(1 ) Slot
(2) Plunger
(3) Control Rod
(4) Delivery Chamber
(5) Feed Hole
(6)
Control Groove
[4] GOVERNOR
The governor controls the amount of the fuel to be fed in
the entire speed range to prevent the engine from changing
its speed according to the load.
The fork lever 1 (3) is held where two forces on it are
balanced. One is the force that fork lever 2 pushes, which is
caused by the tension of the governor spring (4) between
the governor lever (1) and fork lever 2 (5). Another is the
component of the centrifugel force produced by the steel
balls (6) which are rotated by the fuel camshaft (10).
(1) Governor Lever
(2) Start Spring
(3) Fork Lever 1
(4) Governor Spring
(5) Fork Lever 2
(6) Steel Ball
(7)
Governor Sleeve
(8) Steel Ball
(9) Governor Ball Case
(10) Fuel Camshaft
M-35