Maintenance Specifications; Power Unit - Yamaha F60A Supplementary Service Manual

Maintenance specifications

Power unit

Item
Power unit
Minimum compression
pressure*
Lubrication oil pressure
(reference data)
Cylinder heads
Warpage limit
(lines indicate straightedge
position)
Cylinder head journal inside
diameter
Cylinders
Bore size
Taper limit
Out-of-round limit
Pistons
Piston diameter (D)
Measuring point (H)
Piston-to-cylinder clearance
Piston pin boss bore size
Oversize piston
1st
2nd
Oversize piston diameter
1st
2nd
Piston pins
Outside diameter
* Measuring conditions:
Ambient temperature of 20 °C (68 °F), with throttle fully open, and spark plugs removed from all
cylinders
The figures are for reference only.
69W3D1X
General specifications / Maintenance specifications
Unit
kPa
2
(kgf/cm , psi)
kPa
(kgf/cm 2 , psi)
at 900 r/min
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)
Model
F60AEHT
880 (8.8, 125)
110 (1.1, 16)
0.1 (0.004)
37.00–37.02 (1.4567–1.4575)
65.00–65.01 (2.5591–2.5594)
0.08 (0.0031)
0.01 (0.0004)
64.95–64.96 (2.5571–2.5574)
5 (0.2)
0.035–0.065 (0.0014–0.0025)
15.974–15.985 (0.6289–0.6293)
+0.25 (0.0098)
+0.50 (0.0196)
65.20–65.21 (2.5669–2.5673)
65.45–65.46 (2.5768–2.5771)
15.965–15.970 (0.6285–0.6287)
2
F60AET
20