2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 87Get this manual
MAINTENANCE , Tn,s vehlcle "s SPJr4
plU9 .s Hi:w!'Pff Wllh Ill 'nd,um tYpe
nmltlf HIf'Ctf((if'
Check the nsulator for cracks or damage, and the electrodes for wearfouling or rtiscclcrationReplace the plug if necessary
INSULATOR
Do no! clean the
eecr.cces
CE NTER ELECTRODE
Replace the plug if he center elect rode is rou nded as shown Alw ays use ee !ipec' IOO plug an IJIS veh,Cle
SPECIFIED SPARK PLUG: St andardIFR5L11 INGK)VK16PAZll (OENSOI
ROUNDED ELECTRODE
For extend ed high pe ed riding
IFR6l11 (NGK)VK20PRZll (DENSO I
To prevtlm d8f'111g,ng me mdlvm comIng of he center
Measur Ih spark plug gap between the center and side elect rodes it wi re-type feele gaugegauge cannot be nsert ed into the ga pWIRE TYPE FEELER GAUGE
erecrrcoe, use iJ Make sure the 1.20 mm (0.047 inwirety pe feeler