1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 59Get this manual
FUEL SYSTEM Remove the following:main jetneedle jet holderneedle jetslow jet- plugstarter jet Turn the pilot screw in and record the number of turns before it seats lightlyUse this as reference for reinstallationCAUTION
(3) MAIN JET
Damage to the pilot screw seat will occur if the pilot screw is tightened against the seatRemove the pilot screw(1) SCREWS Inspect the pilot screw and each jet and replace them if they are worn or damagedBlow open all jets with compressed air