2004-2007 Honda Aquatrax ARX1200N3/T3/T3D Factory Service Manual, Page 270Get this manual
FUEL SYSTEM (Programmed Fuel Injection) If the vacuum pressure difference does not fall ARX1200T3T3D shown: within specification, remove the sealing caps of the air screws from the throttle body1Tighten all the screws in, and then turn them out 1-14 of turn2Adjust the idle speed to 1,200 rpm using the throttle stop screwThe cylinder with the lowest pressure is the standard3Adjust the pressure on the other cylinders using the air screws, until each pressure is the same as the standard cylinder4If the pressure equals the standard cylinder, within two turns of the air screw, go to step 7If the air screw is turned out more than two turns, and the pressure still does not equal the standard cylinder, this cylinder is now the standard5Fully turn in the new standard cylinder air screw, and then turn it out two turns6Tighten the other air screws all the way in and unscrew them until the pressures equal the standard cylinderIf any air screw is turned out more than two turns, go back to step 4, and begin again7Adjust the idle speed to 1,200 rpm using the throttle stop screwTurn off the water, rev the engine for about 15 seconds and remove the safety lanyard clip off of the engine stop switchNote the clamp installation direction on the vacuum hoses