Kubota WSM J Series Workshop Manual page 114

J SERIES, WSM
Injection Pump
1. Remove the injection pump mounting screws and nuts.
2. Align the control rack pin (2) with the notch (3) on the crankcase,
then remove the injection pump (1).
3. Remove the injection pump timing shims.
4. In principle, the injection pump should not be disassembled.
(When reassembling)
• Securely fit the control rack pin (2) to the grooves of the fork lever
1 (4) and thrust lever (5).
• The sealant is applied to both sides of the shim (soft metal gasket
shim). The liquid gasket is not required for assembling.
• Addition or reduction of shims (0.05 mm, 0.0020 in.) delays or
advances the injection timing by approx. 0.0087 rad. (0.5).
• In disassembling and replacing, be sure to use the same number
of new shims with the same thickness.
(1) Injection Pump
(2) Control Rack Pin
(3) Notch
Fuel Camshaft
1. Remove the fuel camshaft stopper(4).
2. Draw out the fuel camshaft (5) and injection pump gear (3).
3. Remove the fuel feed pump cam (1) and washer (2) from the
injection pump gear (3).
(When reassembling)
• Apply engine oil thinly to the fuel camshaft before installation.
• Check to see each aligning marks of fuel feed pump cam (1) and
injection pump gear (3) are aligned.
(1) Fuel Feed Pump Cam
(2) Washer
(3) Injection Pump Gear
S-68
ENGINE
(4) Fork Lever 1
(5) Thrust Lever
W10252510
(4) Fuel Camshaft Stopper
(5) Fuel Camshaft
W10254790
KiSC issued 10, 2016 A