Maintenance Specification; Power Unit (E115A Models) - Yamaha E115A Service Manual

SPEC

Maintenance specification

Power unit (E115A models)

Item
Power unit
Minimum compression
pressure (*1) at electric starter
at manual starter
Cylinder head
Warpage limit
(lines indicate straightedge
position)
Cylinder
Bore size
Piston
Piston diameter (D)
Measuring point (H)
Piston clearance
Piston pin boss bore
Oversize piston
1st
2nd
Oversize piston diameter
1st
2nd
Piston pin
Piston pin 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.
2-5
Specification
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)
E115AMH E115AWH
—
2 , psi)
400 (4.0, 57)
90.000–90.020 (3.5433–3.5441)
89.920–89.935 (3.5402–3.5407)
0.080–0.085 (0.0032–0.0033)
21.504–21.515 (0.8466–0.8470)
90.170–90.185 (3.5500–3.5506)
90.420–90.435 (3.5598–3.5604)
21.495–21.500 (0.8463–0.8465)
Model
E115AE E115AET
450 (4.5, 64)
—
0.10 (0.0039)
10.0 (0.39)
0.25 (0.010)
0.50 (0.020)
61U5H11