1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 63Get this manual
FUEL SYSTEM PRIMER KNOB Install the primer knob with the spring into the float chamber(1) DIAPHRAGM,
Tighten the screws securelyCAUTION
Do not pinch the diaphragm when installing the screws
(2) SPRING
FLOAT AND JETS
Install the following:starter jetplugslow jetneedle jet, needle jet holdermain jet CAUTION
Handle all jets with careThey can easily be scored or scratchedInstall the pilot screw and return it to its original position as noted during removalPerform pilot screw adjustment if new pilot screw is installed (page 4-14)