ENGINE SPECIFICATIONS
Rocker Arm
Item
Model
18
Model 25
Clearance between rocker
0.0013
to 0.065 mm
0.013
to 0.065 mm
arm and bushing
(0.0005 to 0.0026 in.)
(0.0005 to 0.0026 in.
Rocker arm shaft
O.
D.
10.973
to 10.984 in.
10.973
to 10.984 mm
(0.432 to 0.4324 in.)
(0.432 to 0.4324 in.)
Rocker arm bushing
I.D.
10.997
to
11.038
mm
10.997
to
11.038
mm
(0.433 to 0.4346 in.)
(0.433 to 0.4346 in.)
Camshaft
Camshaft alignment
0.05
mm
0.05
mm
(0.002 in.) (0.002 in.)
Cam height (IN., EX.)
26.88 mm 26.88 mm
(1.0583 in.)
(1.0583 in.)
Oil clearance of camshaft
0.050 to
0.091
mm
0.002 to 0.0036 in.)
(0.002 to 0.0036 in.) (0.002 to 0.0036 in.)
Camshaft
journal
O.D.
32.934 to 32.950 mm
32.934 to
32.950 mm
(1.2966 to 1.2972 in.) (1.2966 to 1.2972 in.)
Camshaft bearing
1.0.
33.000 to 33.025 mm 33.000 to 33.025 mm
(1.2992 to
1.3002 in.) (1.2992 to 1.3002 in.)
Timing Gear
Timing gear backlash
0.042
to
0.115
mm 0.042 to
0.0115
mm
(0.0017
to 0.0045 in.)
(0.0017
to 0.0045 in.)
Idle gear side clearance
0.20
to
0.51
mm
0.20 to
0.51
mm
(0.0079
to
0.0201
in.)
(0.0079
to
0.0201
in.)
Clearance between idle gear
0.016
to 0.045 mm
0.016
to 0.045 mm
shaft and
idle gear bushiing (0.0007 to
0.0017
in.)
(0.0007 to
0.0017
in.)
Idle gear shaft
0.0.
17.973
to
17.984
mm
19.973
to
17.984
mm
(0.7076
to 0.7080 in.)
(0.7076
to 0.7080 in.)
Idle gear bushing
I.D.
18.000
to
18.01<;
mm 18.000 to
18.018
mm
(0.7087 to 0.7093 in.)
(0.708? to 0.7093 in.)
Cylinder (Liner)
Cylinder (Liner)
I.D.
72.000 to
72.019
mm 72.000 to
72.019
mm
(2.8346 to 2.8353 in.)
(2.8346 to 2.8353 in.)
Oversize of
cylinder liner
+0.15
mm +0.15 mm
(+0.0059 in.) (+0.0059 in.)
Piston/Piston Ring
Piston pin
hole
I.D.
20.000 to
20.013
mm 20.000 to
20.013
mm
(0.7874
to
0.7879
in.)
(0.7874
to
0.7879
in.)
Compression
0.25 to 0.40 mm 0.25 to 0.40 mm
Piston ring
ring
2
(0.0098 to
0.0158
in.)
(0.0098 to
0.0158
in.)
clearance
0.20
to 0.40 mm
0.20 to 0.40 mm
Oil Ring
(0.0078
to
0.015
iin.)
(0.0078
to
0.015
in.)
Comprerssio
0.085 to
0.112
mm
0.085 to
0.112
mm
Ring gap
ring
1,2
(0.0033 to 0.0044 in.)
(0.0033 to 0.0044 in.
Oil ring
0.020 to 0.055 mm
0.020 to 0.055 mm
(0.0008 to 0.0022 in.) (0.0008 to 0.0022 in.)
Oversize of piston rings
+0.5 mm
+0.5 mm
(+0.0197 in.) (+0.0197 in.)
24
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