Honda GXR120T Manual page 15

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SERVICE INFORMATION
MAINTENANCE STANDARDS
SERVICE INFORMATION
Part
Engine Maximum speed (at no load)
Idle speed
Cylinder compression
Cylinder block Sleeve I.D.
Piston Skirt O.D.
Piston-to-cylinder clearance
Piston pin bore I.D.
Piston pin Pin O.D.
Piston pin-to-piston pin bore
clearance
Piston rings Ring side
clearance
Ring end gap
Ring width
Connecting rod Small end I.D.
Big end I.D.
Big end side clearance
Big end oil clearance
Crankshaft Crankpin O.D.
Crankshaft runout
Valves Valve clearance
Valve stem O.D.
Valve guide Valve guide I.D.
Guide-to-stem
clearance
Valve guide
installation height
Valve seat width
Valve spring Valve spring free
length
Cam pulley Cam height
Cam pulley I.D.
Cam pulley shaft O.D.
Rocker arm Rocker arm I.D.
Rocker arm shaft O.D.
Rocker arm shaft journal I.D.
Carburetor Main jet
(Float type)
Pilot screw
opening
Float height
Carburetor Main jet
(Floatless type)
Pilot screw opening
Spark plug Gap
Ignition coil Resistance
Air gap
2-2
Item
4,100 ± 100 min
1,850 ± 150 min
0.50 MPa (5.1 kgf/cm
700 min
60.000 – 60.015 (2.3622 – 2.3628)
59.971 – 59.985 (2.3611 – 2.3616)
0.015 – 0.044 (0.0006 – 0.0017)
13.002 – 13.012 (0.5119 – 0.5123)
12.994 – 13.000 (0.5116 – 0.5118)
0.002 – 0.018 (0.0001 – 0.0007)
Top 0.015 – 0.054 (0.0006 – 0.0021)
Second 0.030 – 0.069 (0.0012 – 0.0027)
Top 0.15 – 0.30 (0.0059 – 0.0118)
Second 0.40 – 0.55 (0.0157 – 0.0217)
Oil (side rail) 0.2 – 0.7 (0.01 – 0.03)
Top 0.970 – 0.990 (0.0382 – 0.0390)
Second 1.155 – 1.175 (0.0455 – 0.0463)
13.005 – 13.020 (0.5120 – 0.5126)
26.020 – 26.033 (1.0244 – 1.0249)
0.1 – 0.5 (0.004 – 0.020)
0.040 – 0.063 (0.0016 – 0.0025)
25.970 – 25.980 (1.0224 – 1.0228)
IN 0.15 ± 0.04 (0.006 ± 0.002)
EX 0.20 ± 0.04 (0.008 ± 0.002)
IN 3.970 – 3.985 (0.1563 – 0.1569)
EX 3.935 – 3.950 (0.1549 – 0.1555)
IN/EX 4.000 – 4.018 (0.1575 – 0.1582)
IN 0.015 – 0.048 (0.0006 – 0.0019)
EX 0.050 – 0.083 (0.0020 – 0.0033)
IN 7.5 (0.2953)
IN/EX 0.70 (0.0276)
IN/EX 25.8 (1.0157)
36.483 (1.4363)
10.057 – 10.087 (0.3959 – 0.3971)
9.972 – 9.987 (0.3926 – 0.3932)
6.000 – 6.018 (0.2362 – 0.2369)
5.960 – 5.990 (0.2346 – 0.2358)
6.000 – 6.018 (0.2362 – 0.2369)
BF33S A #60
BF33R A #60
BF33S A 3-1/2 turns out
BF33R A 3-3/8 turns out
15.7 (0.62)
#48
2-3/4 turns out
0.60 – 0.70 (0.024 – 0.028)
Primary
0.75 – 0.92 Ω
resistance
Secondary
6.1 – 9.3 kΩ
resistance
0.2 – 0.5 (0.01 – 0.02)
Standard
-1
(rpm)
-1 (rpm)
2 , 73 psi)/
-1 (rpm)
–
Unit: mm (in)
Service limit
–
–
–
60.165 (2.3687)
59.870 (2.3571)
0.100 (0.0039)
13.048 (0.5137)
12.954 (0.5100)
0.080 (0.0031)
0.12 (0.0047)
0.14 (0.0055)
0.60 (0.0236)
0.85 (0.0335)
1.0 (0.04)
0.940 (0.0370)
1.125 (0.0443)
13.070 (0.5146)
26.06 (1.0260)
0.90 (0.0354)
0.12 (0.0047)
25.920 (1.0205)
0.10 (0.004 in)
–
–
3.900 (0.1535)
3.880 (0.1528)
4.060 (0.1598)
0.098 (0.0039)
0.120 (0.0047)
–
1.800 (0.0709)
24.900 (0.9803)
35.483 (1.3970)
10.105 (0.3978)
9.920 (0.3906)
6.043 (0.2379)
5.953 (0.2344)
6.043 (0.2379)
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