Yamaha F30A 2018, Руководство по обслуживанию

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7-55
Cylinder block
b. Measure the connecting rod small end in-
side diameter “a” and big end inside diam-
eter “b”.
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Checking the connecting rod big end
side clearance
1. Measure:
• Connecting rod big end side clearance “a”
Above specification

Check the crank-
shaft pin width.
See “Checking the crankshaft” (7-55).
Checking the crankshaft
1. Measure:
• Crankshaft journal diameters “a”, crank-
shaft pin diameters “b”, and crankshaft pin
widths “c”
Out of specification

Replace.
2. Measure:
• Runout
Above specification

Replace.
Connecting rod bolt “1”
1st: 6 N·m (0.6 kgf·m, 4.4 lb·ft)
2nd: 17 N·m (1.7 kgf·m, 13 lb·ft)
Big end side clearance
0.050–0.220 mm (0.0020–
0.0087 in)
Limit
0.27 mm (0.0106 in)
1
a
b
T
R
.
.
a
a
Journal diameter
42.984–43.000 mm (1.6923–
1.6929 in)
Crankshaft pin diameter
32.984–33.000 mm (1.2986–
1.2992 in)
Crankshaft pin width
21.00–21.07 mm (0.8268–
0.8295 in)
Crankshaft
Runout
0.03 mm (0.0012 in)
Limit
0.04 mm (0.0016 in)
a
b
c