2007-2009 Honda TRX300EX TRX300X service manual, Page 93Get this manual
FUEL SYSTEM JETS AND FLOAT
Damage to the pilot screw seat will occur if the pilo screw is tightened against the seat
Install new O-ring into the pilot screw grooveInstall the pilot screw with the spring, washer and new O-ring and return it to its original position as noted during removalTOOL: Pilot screw wrench (0 type) 07KMA-MS60101 (not available in U.S.A 07KMA-MN9A100
U.S.ATOOL: Pilot screw wrench (0 type)
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WASHER SPRING PILOT SCREW
Perform the pilot screw adjustment if new pilot screw is installed (page 5-23)Handle all jets with careThey can easily be scored or scratched