Yamaha YXR660FAS Service Manual download pdf (Page 33)

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SPEC

ENGINE SPECIFICATIONS

ENGINE SPECIFICATIONS

Item Standard Limit

Cylinder head

Warp limit ---- 0.03 mm

(0.0012 in)

Cylinder

Bore size 100.005 ~ 100.055 mm

(3.9372 ~ 3.9392 in)

100.10 mm

(3.9410 in)

Measuring point 50 mm (1.97 in) ----

Camshaft

Drive method Chain drive (Left) ----

Cam dimensions

Intake “A” 35.69 ~ 35.79 mm

(1.4051 ~ 1.4091 in)

35.59 mm

(1.4012 in)

“B” 30.06 ~ 30.16 mm

(1.1835 ~ 1.1874 in)

29.96 mm

(1.1795 in)

Exhaust “A” 36.50 ~ 36.60 mm

(1.4370 ~ 1.4409 in)

36.40 mm

(1.4331 in)

“B” 30.11 ~ 30.21 mm

(1.1854 ~ 1.1894 in)

30.01 mm

(1.1815 in)

Camshaft runout limit ---- 0.03 mm

(0.0012 in)

A

B

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