1995-2000 Honda FourTrax 300 300FW TRX300 TRX300FW TRX service manual., Page 84Get this manual
CYLINDER HEADNALVES VALVE SEAT CUTTERS ValVe sea! cunertla grinder0 equivalenl sear refacing equipm&l1! ere recommended to ""001 worn vallie
Follow 1Ile re!acer manufacturer's
VALVE SEAT REFACING
Use 45 dagreesctJllerl0 remove any rwghoess or irragulari!Jas from rile seat
Relace rile seat wittl 45 degrees cutrer whenever guode is rtl9!aood