2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 53Get this manual
MAINTENANCE Adjust by loosening the lock nu and turn ing he adjust ing screw unti there is slight drag on he feeler gaugeHol he adjusting screw and ighten the lock nutTORQUE: 24 (2.4 kgfm, 18 Ibfft) After ti ghten ing the lock nut, recheck the va lve clearance
Coat new O-rings wi engine oil and install the into the adjust ing hole cap grooves Install the adju sti ng hole ca ps and tig hten them TORQUE15 N'm (1.5 kgfm, 11 Ibf.ft)