2003 2005 YFM45FAR, YFM450FAR Kodiak OEM Service Manual, Page 76Get this manual
ADJUSTING THE VALVE CLEARANCE 8.Adjust: Valve clearance
Adjustment steps: Loosen the locknut 1G Insert feeler gauge between the adjuster end and the valve endG Turn the adjuster clockwise or counterclockwise with the valve adjusting tool until the proper clearance is obtainedTappet adjusting tool: PNYM-08035, 90890-01311
the adjuster to prevent it from moving and then tighten the locknutLocknut: 20 Nm (2.0 kg, 14 ft lb)
the valve clearanceG If the clearance is incorrect, repeat the above steps until the proper clearance is obtained