Kubota WSM ZD331 User Manual

1-S33
ZD321, ZD326, ZD331, WSM
ENGINE
Nozzle Holder Assembly and Glow Plug
1. Remove the overflow pipe (1).
2. Remove the nozzle holder assemblies (4).
3. Remove the copper gasket (5) and heat seal (6).
4. Remove the lead (2) from the glow plugs (3).
5. Remove the glow plugs (3).
(When reassembling)
• Replace the copper gasket and heat seal with new one.
W1024604
Nozzle Heat Seal Service Removal Procedure
IMPORTANT■
• Use a plus (phillips head) screw driver (1) that has a
diameter which is bigger than the heat seal hole (Approx. 6
mm (1/4 in.)).
1. Drive screw driver (1) lightly into the heat seal hole.
2. Turn screw driver three or four times each way.
3. While turning the screw driver, slowly pull the heat seal (4) out
together with the injection nozzle gasket (3).
4. If the heat seal drops, repeat the above procedure.
(When reassembling)
• Heat seal and injection nozzle gasket must be changed when the
injection nozzle is removed for cleaning or for service.
W1021255
Tightening torque
Overflow pipe retaining nut
20 to 24 N·m
2.0 to 2.5 kgf·m
15 to 18 lbf·ft
Nozzle holder assembly
49 to 68 N·m
5.0 to 7.0 kgf·m
37 to 50 lbf·ft
Glow plug
8 to 14 N·m
0.8 to 1.5 kgf·m
6 to 10 lbf·ft
(1) Overflow Pipe
(2) Lead
(3) Glow Plug
(4) Nozzle Holder Assembly
(5) Copper Gasket
(6) Heat Seal
(1) Plus Screw Driver
(2) Nozzle Holder
(3) Injection Nozzle Gasket
(4) Heat Seal
KiSC issued 04, 2007 A

Kubota WSM ZD331 Specifications

General

Transmission	Hydrostatic
Fuel Type	Diesel
Cylinders	3
Engine Type	Diesel
Cutting Width	72 inches
PTO	Independent
Type	Zero-Turn Mower
Displacement	68.5 cu in
Drive	2WD
Turning Radius	Zero