Cub Cadet 8404 - Manual (Page 41)

ENGINE SYSTEM
2-19 D615-W02 May-2003
615W245A
615W246A
E. FUEL INJECTION NOZZLE
The nozzle is a throttle-type one. It features low fuel
consumption and works well with DAEDONG combus-
tion chamber. The nozzle valve opening pressure is
about 13.7 to 14.7 MPa (140 to 150 kgf/cm², 1991 to
2134 psi), the pressure overcomes the counterforce of
nozzle valve spring, and push the valve up instantly, the
fuel is then injected in a proper quantity into the swirl-
ing air in the combustion chamber for combustion. Ad-
dition or reduction of adjusting can adjust the opening
pressure. A washer of 0.1 mm corresponds to 980 kPa
(10 kgf/cm², 142 psi) change in opening pressure. The
heat seal is employed to improve the durability and
reliability of the nozzle.
F. GOVERNOR AND IDLE COMPENSATING
a . Disassembled View
The governor serves to keep engine speed constant by
automatically adjusting the amount of fuel supplied to
the engine according to changes in the load. The en-
gine employs an all-speed governor which controls
centrifugal force of the steel ball (13) weight, produced
by rotation of the fuel camshaft (9), and tension of the
governor spring 1 (2) and 2 (3) are balanced.
(1) Nozzle Holder Ass’y (6) Nozzle Body
(2) Adjusting Washer (7) Needle Valve
(3) Nozzle Spring (8) Heat Seal
(4) Push Rod (9) Packing
(5) Retaining Nut
(1) Start Spring (8) Governor Lever
(2) Governor Spring 1 (9) Fuel Camshaft
(3) Governor Spring 2 (10) Governor Ball Case
(4) Fork Lever 1 (11) Steel Ball
(5) Fork Lever 2 (12) Governor Sleeve
(6) Fork Lever Shaft (13) Steel Ball
(7) Fork Lever Holder