Yamaha 2003 YFZ450S, Service Manual

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SPEC
ENGINE SPECIFICATIONS
EBS01002
ENGINE SPECIFICATIONS
Item Standard Limit
Cylinder head
Warp limit ---- 0.05 mm
(0.002 in)
Cylinder
Bore size 95.00 ~ 95.01 mm (3.7402 ~ 3.7406 in) ----
Camshaft
Drive method Chain drive (Left)
Camshaft cap inside diameter 22.000 ~ 22.021 mm (0.8661 ~ 0.8670 in) ----
Camshaft journal diameter 21.967 ~ 21.980 mm (0.8648 ~ 0.8654 in) ----
Camshaft-journal-to-camshaft-cap
clearance 0.020 ~ 0.054 mm (0.0008 ~ 0.0021 in) 0.080 mm
(0.0032 in)
Camshaft lobe dimensions
Intake “A” 31.200 ~ 31.300 mm (1.2283 ~ 1.2323 in) 31.100 mm
(1.2244 in)
“B” 22.550 ~ 22.650 mm (0.8878 ~ 0.8917 in) 22.450 mm
(0.8839 in)
Exhaust “A” 30.950 ~ 31.050 mm (1.2185 ~ 1.2224 in) 30.850 mm
(1.2146 in)
“B” 22.494 ~ 22.594 mm (0.8856 ~ 0.8895 in) 22.394 mm
(0.8817 in)
Camshaft runout limit ---- 0.03 mm
(0.0012 in)
Timing chain
Timing chain type/No. of links 98XRH2010-118M ----
Timing chain adjustment method Automatic ----
A
B