1995-2000 Honda FourTrax 300 300FW TRX300 TRX300FW TRX service manual., Page 313Get this manual
IGNITION SYSTEM
PEAK VOLTAGE TESTING
To Clink ltIII engone wnhou, staAorog Co
Tum IhllIueI vallie OFF
Remove !hespaJlt piug(Il and ground aylA)lllthe plug heN
Tum ,- engine stop 1JW111;1I 1o RUN Tum ,- igrulion SW;II;II ON
PtMlroe tarl"0
crank the kJo;lfreno
SPARK 01 Replacl the spaJlt plug Wltl one known 10 be {IOOd ""-'-"-'-
Tlst ride
MIaI new spaJlt plug
NO SPARK
Clle:k batl6ty condition U!he Honda bllllery 'Nlet (8M210) 10 verily !Ieron(!;lion 01 the bII"e'Y Charge the banery eOed
SPARK OK
TNt rideChec:k !he kIIowog;
cn.cl IIIe neuuallighl