2002-2006 Yamaha YFR450FAR Service Manual LIT-11616-16-01, Page 36Get this manual
MAINTENANCE SPECIFICATIONS Item Cam chain: Cam chain typeNoof links Cam chain adjustment method Rocker armrocker arm shaft: Bearing inside diameter Shaft outside diameter Arm-to-shaft clearance Valve, valve seat, valve guide: Valve clearance (cold) Standard DID SCR-0409 SDH116 Automatic 12.00012.018 mm (0.47240.4731 in) 11.98111.991 mm (0.47170.4721 in) 0.0090.037 mm (0.00040.0015 in) IN EX Valve dimensions 0.060.10 mm (0.00240.0039 in) 0.160.20 mm (0.00630.0079 in)
Limit 12.078 mm (0.4755 in) 11.951 mm (0.4705 in) 0.080 mm (0.0031 in) -
B Head Diameter Face Width Seat Width
C Margin Thickness
"A" head diameter
"B" face width "C" seat width
IN EX IN EX
"D" margin thickness