2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 81Get this manual
FUEL SYSTEM 5Start the engine and adjust the id le speed with the throttle stop screwIDLE SPEED: 1,600 100 rpm (min-')
6Turn the air screw in or out slowly to obtain the
highest engine speed
7Snap the throttletimes and readjust the idle speed with the throttle stop screw
STurn the air screw out gradually until the engine
speed drops by 100 rpm (min-')
9Turn the air screw in to the fi nal opening FINAL OPENING: 14 tums in
U.S.Atype only
10.Remove the plug from the air cleaner-to -PAIR control valve hose, then connect the air cleanerto-PAIR control valve hose to the air cleaner housing 11 .Readjust the idle speed with the throttle stop screwIDLE SPEED: 1,600 100 rpm (min" )