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1-3 Service limit
UNIT：mm
Parts Item Standard Service limit
Engine
Maximum speed (No load)
Cylinder compression
3800±100rpm
1.15Mpa at 1200rpm
3650/4000-
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Cylinder head
Sleeve I.D 68.00-68.02 68.160
Cylinder head
Flatness 0-0.05 0.100
Piston
Skirt O.D.
Piston – to cylinder clearance
Piston pin bore I.D.
Piston pin O.D
Piston pin-to-piston pin bore clearance
67.971-67.989
0.011-0.049
16.006-16.012
15.994-16.00
0.006-0.018
67.850
0.120
16.450
15.940
0.060
Piston rings
Ring side clearance: first/ second
Ring width： first/second
Ring end gap: first/second
0.04～0.08/0.04～0.08
2.60±0.10/2.80±0.10
0.13～0.28/0.20～0.40
0.150
2.300
1.000
Connecting
rod
Small end I.D
Big end I.D
Big oil clearance
Big end side clearance
16.005-16.021
30.000-30.018
0.019-0.049
0.3-0.7
16.090
30.066
0.120
1.100
Crankshaft
Crankshaft pin O.D 29.969-29.981 29.910
Valve
Valve clearance
Stem O.D
Guide I.D
Stem clearance
Seat width
Spring free length
IN
EX
IN
EX
IN
EX
IN
EX
0.10-0.15
0.15-0.20
5.440-5.455
5.430-5.445
5.500-5.520
5.500-5.520
0.045-0.080
0.055-0.090
0.85
30.50
0.4
0.4
5.310
5.300
5.590
5.590
0.100
0.120
2.000
28.500
Camshaft
Cam height
Journal I.D
IN
EX
23.98
27.88
9.00-9.04
23.730
27.630
9.090
Camshaft
Camshaft I.D. 9.00-9.04 9.19
Spark plug Gap 0.6-0.7 -
Ignition coil
Resistance
Air gap
Primary coil
Secondary coil
（at flywheel）
0.8-1.0 Ω
5.9-7.2 kΩ
0.35~0.45mm
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