Yamaha pw80 - Manual (Page 56)

Engine
Item
Cylinder Head:
Warp Limit
PW80
0.03mm (0.0012in)
* Lines indicate straightedge measurement.
Cylinder:
Bore Size
Taper Limit
Out of Round Limit
47.000-47.014 mm (1.8504-1.8509 in)
0.05 mm (0.0020 in)
0.01 mm (0.0004 in)
Piston:
Piston Size/
Measuring Point*
Piston Clearance
Piston offset
o
46.964-46.979 mm (1.8490-1.8496 in)/5 mm (0.2 in)
0.033^0.038 mm (0.0013^0.0015 in)
0.2 mm (0.008 in), IN-side
Piston Ring:
Sectional Sketch Top Ring/2nd Ring
End Gap (Installed) Top Ring/2nd Ring
Side Clearance (Installed) Top Ring/2nd Ring
Keystone
B = 2.0 mm (0.079 in)
T = 2.0mm (0.079 in)
0.15 - 0.35 mm (0.006 - 0.014 in)
0.020^ 0.060 mm (0.0008-0.0024 in)
Crankshaft:
Crank Width “ k "
Run Out Limit ''C"
Connecting Rod Big End Side Clearance '"D"
Small End Free Play “ F ’
47.90-47.95 mm (1.886-1.888 in)
0.05 mm (0.0020 in)
0.30-0.80 mm (0.012-0.031 in)
1.0 mm (0.039 in)
-44-