Yamaha PW50W 2007 Service Manual page 19

Item
Cylinder head:
Volume
Warpage limit
Cylinder:
Bore
Wear limit
Taper limit
Out of round limit
Piston:
Piston-to-cylinder clearance
Limit
Diameter D
Height H
Offset
Offset direction
Piston pin bore inside diameter
Limit
Piston pin outside diameter
Limit
Piston ring:
Top ring
Ring type
Dimensions (B x T)
End gap (installed)
Limit
Ring side clearance
Limit
2nd ring
Ring type
Dimensions (B x T)
End gap (installed)
Limit
Ring side clearance
Limit
Crankshaft:
Width A
Runout limit C
Big end side clearance D
Big end radial clearance
Small end free play F
MAINTENANCE SPECIFICATIONS
6.80 cm
0.03 mm (0.0012 in)
39.993-40.012 mm (1.5745-1.5753 in)
40.100 mm (1.5787 in)
0.050 mm (0.0020 in)
0.010 mm (0.0004 in)
0.034-0.047 mm (0.0013-0.0019 in)
0.10 mm (0.0039 in)
H
39.952-39.972 mm (1.5729-1.5737 in)
5.0 mm (0.20 in)
0.20 mm (0.0079 in)
D
Exhaust side
10.004-10.015 mm (0.3939-0.3943 in)
10.035 mm (0.3951 in)
9.994-10.000 mm (0.3935-0.3937 in)
9.974 mm (0.3927 in)
Keystone
1.50 x 1.80 mm (0.06 x 0.07 in)
0.15-0.35 mm (0.0059-0.0138 in)
0.50 mm (0.0197 in)
0.020-0.060 mm (0.0008-0.0024 in)
0.080 mm (0.0032 in)
Keystone
1.50 x 1.80 mm (0.06 x 0.07 in)
0.15-0.35 mm (0.0059-0.0138 in)
0.50 mm (0.0197 in)
0.020-0.060 mm (0.0008-0.0024 in)
0.080 mm (0.0032 in)
37.90-37.95 mm (1.492-1.494 in)
0.050 mm (0.0020 in)
0.350-0.550 mm (0.0138-0.0217 in)
0.350-0.550 mm (0.0138-0.0217 in)
0.40-0.80 mm (0.02-0.03 in)
2-3
SPEC
PW50
3 (0.41 cu.in)