1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 48Get this manual
FUEL SYSTEM Remove the float pinbaffle, float and float valve
Inspect the float valve for grooves and nicks, and replace if necessaryInspect the operation of the float valve
Remove the main jet, needle jet holder and needle jet Remove the slow jetRemove the starter jetTurn the pilot screw in and record the number of turns before it seats lightlyUse this as reference for reinstallation