1995-2000 Honda FourTrax 300 300FW TRX300 TRX300FW TRX service manual., Page 60Get this manual
FUEL SYSTEM DIAPHRAGMVACUUM PISTON Install th8 needle dp on the jet needleJET NEEDLE ""-
STANDARD SETTING: 3:1 groove from the top
Instalithe ashllf, jel ooedleSf'lng and jel n&edle holder to the vacuum pislon
Push lhe jet n&edle OOkIer in and tum W1se
90 oogr_ clock
JET NEEotE