2.4 Serial number location
The engine serial number is stamped on the block above the oil dipstick. Refer to this number
when ordering parts or making technical inquiries.
2.5 Engine maintenance standards
Part
Engine
Cylinder
Piston
Piston pin
Piston ring
Connecting
rod
Crankshaft
Valves
Serial number
序列号位置
Item
Maximum speed without load
Compress force
Sleeve I.D.
Skirt O.D
Pin bore I.D.
O.D
Ring side clearance
1st ring
Ring end clearance
Ring side clearance
2nd ring
Ring end clearance
Ring side clearance
Oil ring
Ring end clearance
Small end I.D
Big end I.D
Crank pin O.D.
Valve
clearance
Stem O.D.
Standard(mm)
0.45Mpa/800rpm
58.000-58.020
57.960-57.980
13.002-13.008
12.994-13.000
Height h
Width t
Height h
Width t
Height h
Width t
13.006—13.017
24.020—24.033
23.967-23.980
IN
EX
IN
EX
13
Service limit
4300±100rpm
0.97-0.99
0.02-0.06
0.15-0.25
1.95-2.15
1.17-1.19
0.02-0.06
0.15-0.25
2.4-2.6
1.85-1.98
0.03-0.18
0.20-0.50
2.3-2.7
0.10±0.02
0.15±0.02
3.965—3.980
3.955—3.970
—
—
58.105
57.85
13.05
12.95
0.87
0.15
1.0
1.75
1.07
0.15
1.0
2.2
1.75
0.24
1.0
2.2
13.08
24.09
23.90
---
---
3.90
3.90