Yamaha F115A, Service Manual

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2-3
SPEC
E
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
2
POWER UNIT
Item Unit
Model
Worldwide F115AET FL115AET
USA F115TR LF115TR
Canada F115TR LF115TR
CYLINDER HEADS
Warpage limit mm (in) 0.1 (0.004)
(lines indicate straightedge
position)
Camshaft journal inside
diameter
mm (in) 25.000 - 25.021 (0.984 - 0.985)
Valve lifter hole inside
diameter mm (in) 28.000 - 28.021 (1.102 - 1.103)
CYLINDERS
Bore size mm (in) 79.000 - 79.020 (3.110 - 3.111)
Taper limit mm (in) 0.08 (0.003)
Out-of-round limit mm (in) 0.05 (0.002)
PISTONS
Piston diameter (D) mm (in) 78.928 - 78.949 (3.1074 - 3.1082)
Measuring point (H) mm (in) 13 (0.51)
Piston-to-cylinder clearance mm (in) 0.070 - 0.080 (0.0028 - 0.0031)
<Limit> mm (in) 0.13 (0.005)
Oversize piston diameter mm (in) 79.25 (3.120)
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 (0.046 - 0.047)
Dimension T mm (in) 2.89 - 2.91 (0.114 - 0.115)
End gap mm (in) 0.15 - 0.30 (0.006 - 0.012)
Side clearance mm (in) 0.04 - 0.08 (0.002 - 0.003)
2nd ring
Dimension B mm (in) 1.47 - 1.49 (0.058 - 0.059)
Dimension T mm (in) 3.00 - 3.20 (0.118 - 0.126)
End gap mm (in) 0.70 - 0.90 (0.028 - 0.035)
Side clearance mm (in) 0.03 - 0.07 (0.001 - 0.003)
T
B
T
B