2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 381Get this manual
MAINTENANCE SPECIFICATIONS Item Stem runout limit -Standard
Limit 0.01 mm (0.0004 in)
Valve seat width
1.21.4 mm (0.04720.0551 in) 1.21.4 mm (0.04720.0551 in)
Valve spring: Inner spring Free length
39.9 mm (1.57 in) 39.9 mm (1.57 in) 33.6 mm (1.32 in) 33.6 mm (1.32 in)
Set length (valve closed) Compressed pressure (installed)