Kubota WSM ZD331 User Manual

1-S5
ZD321, ZD326, ZD331, WSM
ENGINE
2. SERVICING SPECIFICATIONS
[1] D782-E2-ZD
ENGINE BODY
W10138740
Item Factory Specification Allowable Limit
Valve Clearance (Cold) 0.145 to 0.185 mm
0.00571 to 0.00728 in.
–
Compression Pressure
Difference among Cylinders
2.84 to 3.24 MPa
29.0 to 33.0 kgf/cm
2
413 to 469 psi
–
2.26 MPa
23.0 kgf/cm
2
327 psi
10 % or less
Top Clearance 0.50 to 0.70 mm
0.0197 to 0.0276 in.
–
Cylinder Head Surface Flatness – 0.05 mm
0.0020 in.
Valve Recessing Intake and Exhaust −0.10 to 0.10 mm
−0.0039 to 0.0039 in.
0.30 mm
0.0118 in.
Valve Stem to Valve Guide
Valve Stem
Valve Guide
Clearance
O.D.
I.D.
0.030 to 0.057 mm
0.00118 to 0.00224 in.
5.968 to 5.980 mm
0.23496 to 0.23543 in.
6.010 to 6.025 mm
0.23661 to 0.23720 in.
0.10 mm
0.0039 in.
–
–
Valve Face Angle 0.785 rad
45 °
–
Valve Seat Angle
Width
0.785 rad
45 °
2.12 mm
0.0835 in.
–
–
Valve Spring Free Length
Tilt
Setting Load /
Setting Length
31.3 to 31.8 mm
1.232 to 1.252 in.
–
64.7 N / 27.0 mm
6.6 kgf / 27.0 mm
14.6 lbf / 1.063 in.
28.4 mm
1.118 in.
1.2 mm
0.047 in.
54.9 N / 27.0 mm
5.6 kgf / 27.0 mm
12.3 lbf / 1.063 in.
KiSC issued 04, 2007 A

Kubota WSM ZD331 Specifications

General

Brand	Kubota
Model	WSM ZD331
Category	Lawn Mower
Language	English