Kubota WSM L3560, Workshop Manual

Page: 151 / 801

ENGINE
L3560, L4060, L4760, L5060, L5460, L6060, WSM
1-S4
2. SERVICING SPECIFICATIONS
ENGINE BODY
Item Factory Specification Allowable Limit
Valve Clearance (When Cold) 0.18 to 0.22 mm
0.0071 to 0.0086 in.
–
Compression Pressure
(When You Crank the Engine with the Starter)
Difference among Cylinders
2.95 to 3.23 MPa /
290 min
-1
(rpm)
30.0 to 33.0 kgf/cm
2
/
290 min
-1
(rpm)
427 to 469 psi /
290 min
-1
(rpm)
–
2.35 MPa /
290 min
-1
(rpm)
24.0 kgf/cm
2
/
290 min
-1
(rpm)
341 psi /
290 min
-1
(rpm)
10 % or less
Top Clearance 0.60 to 0.70 mm
0.024 to 0.027 in.
–
Cylinder Head Surface Flatness – 0.05 mm / 500 mm
0.002 in. / 19.7 in.
Valve Recessing Recessing 0.65 to 0.85 mm
0.026 to 0.033 in.
1.20 mm
0.0472 in.
Valve Stem to Valve Guide
• Valve Stem
• Valve Guide
Clearance
O.D.
I.D.
0.040 to 0.070 mm
0.0016 to 0.0027 in.
7.960 to 7.975 mm
0.3134 to 0.3139 in.
8.015 to 8.030 mm
0.3156 to 0.3161 in.
0.10 mm
0.0039 in.
–
–
Valve Face Angle (Intake)
Angle (Exhaust)
0.79 rad
45 °
0.79 rad
45 °
–
–
Valve Seat Width (Intake)
Width (Exhaust)
2.12 mm
0.0835 in.
2.12 mm
0.0835 in.
–
–
Valve Seat Angle (Intake)
Angle (Exhaust)
0.79 rad
45 °
0.79 rad
45 °
–
–
Valve Timing (Intake Valve) Open
Close
0.2 rad (9 °)
before T.D.C.
0.68 rad (39 °)
after B.D.C.
–
–
Valve Timing (Exhaust Valve) Open
Close
0.72 rad (41 °)
before B.D.C.
0.2 rad (9 °)
after T.D.C.
–
–
KiSC issued 03, 2016 A