2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 68Get this manual
MAINTENANCE Toprevent dimaging IfIe iridium coalIng of the center electrode, use a
Measu re the spar lug gap between he cent er and side electrodes it wire-type feeler gau geMa ke sure the 1.20 (0.047 inre-type feeler
WIRE TYPE FEELER GAUGE
wire-rype looler
ga uge can not be inserted into the gapIf the ga uge can be inse rted in to he gap, repl ace the plug with new ne
gauge to dtecJ the spark plug gap
Do not adjust the Screw the spa rk lug into he cy lin de he ad by hand spark plug fJifPII to prevent cross-t hread ingthe gap IS out of Tighten th spark plugspeclfafOflrepJace WIth iJ new