Yamaha F100B - General Specifications; Maintenance Specifications; Power Unit; Specifications

SPEC
Specifications
2-3
60C5D11
Maintenance specifications
2
Power unit
Item Unit
Model
F100BET F100CET
Power unit
Minimum compression
pressure*
kPa
(kgf/cm
2
, psi)
670 (6.7, 95)
Lubrication oil pressure
(reference data)
kPa (kgf/cm
2
,
psi) at
850 r/min
520 (5.2, 74)
Cylinder heads
Warpage limit mm (in) 0.1 (0.04)
(lines indicate straightedge
position)
Cylinder head journal inside
diameter
mm (in) 25.00–25.02 (0.9843–0.9850)
Cylinders
Bore size mm (in) 79.00–79.02 (3.1103–3.1110)
Taper limit mm (in) 0.08 (0.0031)
Out-of-round limit mm (in) 0.08 (0.0031)
Pistons
Piston diameter (D) mm (in) 78.93–78.94 (3.1075–3.1078)
Measuring point (H) mm (in) 13 (0.5)
Piston-to-cylinder clearance mm (in) 0.07–0.08 (0.0028–0.0031)
Oversize piston
1st mm (in) + 0.25 (0.0098)
Oversize piston diameter mm (in) 79.18–79.19 (3.1173–3.1177)
Piston pins
Outside diameter mm (in) 17.997–18.000 (0.7085–0.7087)
Piston rings
Top ring
Dimension B mm (in) 1.17–1.19 (0.0461–0.0468)
Dimension T mm (in) 2.80–3.00 (0.1103–0.1181)
End gap mm (in) 0.15–0.35 (0.0060–0.0137)
Side clearance mm (in) 0.04–0.08 (0.0016–0.0031)
* Measuring conditions:
Ambient temperature 20 °C (68 °F), wide open throttle, with plugs disconnected from all cylinders.
The figures are for reference only.