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Model name:
Model code number:
Cylinder:
Inside diameter "D"
<Limit>
Taper limit
Warpage limit
Crankshaft:
Big end side clearance "A"
<Limit>
Runout "B"
<Limit>
Crank pin outside diameter "C"
<Limit>
Connecting rod:
Small end diameter "A"
Oil clearance
Big end diameter "B"
Big end oil clearance
<Limit>
Camshaft:
Camshaft outside diameter
Camshaft lobe dimensions
"A"
IN
<Limit>
"A"
EX
<Limit>
"B"
IN
<Limit>
"B"
EX
<Limit>
Camshaft journal diameter
<Limit>
MAINTENANCE SPECIFICATIONS
mm (in)
mm (in)
mm (in)
mm (in)
4-4
MZ250
7KBJ
7KBN
74.000–74.020
(2.9134–2.9142)
74.040 (2.915)
0.05 (0.002)
0.05 (0.002)
0.20–0.65 (0.008–0.026)
0.8 (0.0315)
0.02 (0.008)
33.969–33.984 (1.3374–1.3380)
33.9 (1.3346)
19.006–19.020 (0.7483–0.7488)
0.006–0.025 (0.0002–0.0010)
34.000–34.015 (1.3386–1.3392)
0.016–0.046 (0.0006–0.0018)
0.09 (0.0035)
32.50–32.60
(1.280–1.284)
32.30 (1.272)
32.07–32.17
(1.263–1.267)
31.87 (1.255)
26.03–26.13
(1.025–1.029)
25.83 (10.17)
25.98–26.08
(1.023–1.027)
25.78 (1.015)
15.965–15.990 (0.6285–0.6295)
15.950 (0.628)
SPEC
MZ300
7VBJ
7VBN
80.000–80.020
(3.1496–3.1504)
80.040 (3.151)
32.10–32.20
(1.264–1.268)
31.90 (1.256)
32.50–32.60
(1.280–1.284)
32.30 (1.272)
25.98–26.08
(1.023–1.027)
25.78 (1.015)
26.03–26.13
(1.025–1.029)
25.83 (1.017)
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