Yamaha PW50W 2007, Service Manual

Page: 19 / 168

SPEC
MAINTENANCE SPECIFICATIONS
2-3
Item PW50
Cylinder head:
Volume 6.80 cm 3 (0.41 cu.in)
Warpage limit 0.03 mm (0.0012 in)
Cylinder:
Bore 39.993-40.012 mm (1.5745-1.5753 in)
Wear limit 40.100 mm (1.5787 in)
Taper limit 0.050 mm (0.0020 in)
Out of round limit 0.010 mm (0.0004 in)
Piston:
Piston-to-cylinder clearance 0.034-0.047 mm (0.0013-0.0019 in)
Limit 0.10 mm (0.0039 in)
Diameter D 39.952-39.972 mm (1.5729-1.5737 in)
Height H 5.0 mm (0.20 in)
Offset 0.20 mm (0.0079 in)
Offset direction Exhaust side
Piston pin bore inside diameter 10.004-10.015 mm (0.3939-0.3943 in)
Limit 10.035 mm (0.3951 in)
Piston pin outside diameter 9.994-10.000 mm (0.3935-0.3937 in)
Limit 9.974 mm (0.3927 in)
Piston ring:
Top ring
Ring type Keystone
Dimensions (B x T) 1.50 x 1.80 mm (0.06 x 0.07 in)
End gap (installed) 0.15-0.35 mm (0.0059-0.0138 in)
Limit 0.50 mm (0.0197 in)
Ring side clearance 0.020-0.060 mm (0.0008-0.0024 in)
Limit 0.080 mm (0.0032 in)
2nd ring
Ring type Keystone
Dimensions (B x T) 1.50 x 1.80 mm (0.06 x 0.07 in)
End gap (installed) 0.15-0.35 mm (0.0059-0.0138 in)
Limit 0.50 mm (0.0197 in)
Ring side clearance 0.020-0.060 mm (0.0008-0.0024 in)
Limit 0.080 mm (0.0032 in)
Crankshaft:
Width A 37.90-37.95 mm (1.492-1.494 in)
Runout limit C 0.050 mm (0.0020 in)
Big end side clearance D 0.350-0.550 mm (0.0138-0.0217 in)
Big end radial clearance 0.350-0.550 mm (0.0138-0.0217 in)
Small end free play F 0.40-0.80 mm (0.02-0.03 in)
H
D
5PG-7-10 17 06.5.16, 17:42:13