Maintenance Specification; Power Unit - Yamaha E60HWD Service Manual

SPEC

Maintenance specification

Power unit

Item
Power unit
Minimum compression
pressure (*1)
Cylinder head
Warpage limit
(lines indicate straightedge
position)
Cylinders
Bore size
Wear limit
Taper limit
Out-of-round limit
Pistons
Piston diameter (D)
Measuring point (H)
Piston-to-cylinder clearance
(limit)
Piston pin boss bore
Oversize piston
1st
2nd
Oversize piston diameter
1st
2nd
Piston pins
Outside diameter
(*1) Measuring conditions:
Ambient temperature 20°C (68°F), wide open throttle, with spark plugs removed from all cylinders.
The figures are for reference only.
2-3
Specifications
Unit
kPa
(kgf/cm
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
E60HMHD
2 , psi)
72.000–72.020 (2.8346–2.8354)
71.940–71.965 (2.8323–2.8333)
0.055–0.060 (0.0022–0.0024)
19.904–19.915 (0.7836–0.7841)
72.190–72.215 (2.8421–2.8431)
72.440–72.465 (2.8520–2.8529)
19.895–19.900 (0.7833–0.7835)
Model
E60HWHD E60HWD
540 (5.4, 76)
0.1 (0.0039)
72.1 (2.84)
0.08 (0.0032)
0.05 (0.0020)
10.0 (0.39)
0.110 (0.0043)
0.25 (0.010)
0.50 (0.020)
69D5G11