Yamaha F115 AETL [42/709] Maintenance specifications

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SPEC

MAINTENANCE SPECIFICATIONS

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) 0.08 (0.003)

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) 0.206 (0.0081)

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) 0.02 - 0.08 (0.001 - 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)