1987 Honda Fourtrax TRX 250X Service Manual, Page 46Get this manual
FUEL SYSTEM Inspect the float valve and valve seat for grooves and nicksReplace as required Inspect the operation of the float valve
Remove the main jet, needle jet holder and needle jetRemove the slow jetTurn the pilot screw in and record the number of turns before it seats lightlyUse this as reference for reinstallation
12) NEEDLE JET
CAUTION
Damage to the pilOI screw seat will occur if the pilot screw is