Kubota GR1600EC2, Workshop Manual, Page: 71 / 241

1-S4
GR1600EC2, WSM ENGINE
2. SERVICING SPECIFICATIONS
ENGINE BODY
W10138740
Item Factory Specification Allowable Limit
Compression Pressure – 2.84 to 3.24 MPa
29.0 to 33.0 kgf/cm
2
412 to 469 psi
2.26 MPa
23.0 kgf/cm
2
327 psi
Variance Among
Cylinder – 10 % or less
Top Clearance 0.50 to 0.70 mm
0.0197 to 0.0276 in.
–
Valve Clearance (Cold) 0.145 to 0.185 mm
0.00571 to 0.00728 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 Clearance 0.030 to 0.057 mm
0.00118 to 0.00224 in.
0.10 mm
0.0039 in.
Valve Stem
(O.D.) 5.968 to 5.980 mm
0.23496 to 0.23543 in.
–
Valve Guide
(I.D.) 6.010 to 6.025 mm
0.23661 to 0.23720 in.
–
Valve Seat Width 2.12 mm
0.0835 in.
–
Angle 0.785 rad
45 °
–
Valve Face Angle 0.785 rad
45 °
–
Valve Spring Free Length 31.3 to 31.8 mm
1.232 to 1.252 in.
28.4 mm
1.118 in.
Tilt – 1.2 mm
0.047 in.
Setting Load 64.7 N
6.6 kgf
14.6 lbs
54.9 N
5.6 kgf
12.3 lbs
Setting Length 27.0 mm
1.063 in.
–
Rocker Arm to Rocker Arm Shaft Oil Clearance 0.016 to 0.045 mm
0.00063 to 0.00177 in.
0.15 mm
0.0059 in.
Rocker Arm Shaft
(O.D.) 10.473 to 10.484 mm
0.41232 to 0.41276 in.
–
Rocker Arm
(I.D.) 10.500 to 10.518 mm
0.41339 to 0.41410 in.
–
Push Rod Alignment – 0.25 mm
0.0098 in.
KiSC issued 07, 2006 A