1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 99Get this manual
FUEL SYSTEM Push the jet needle holder down and turn it counterc lockwise 90 degree.s ith screwdriverTtJen remove the needle holder, spring, jet needle and wasi1er from the dia phragmivacullm piston
knspec:t the jet needle fo raxcessive wear at the tiP or othe damageCheck for tom iaphragm other deterioration