2007 Yamaha TTR 125 E Idle Adjustment - How to Adjust Carburetor
You need to make sure you don't have any intake leaks by spraying some brake blade, contact cleaner, start liquid etc. around the intake crumbs and seals, if the revs go up or down significantly, then you have a leak that will be fixed Before you can proceed with the Carbu. Regretion adjustment.
The engine should be at operating temperature, with the tee to adjust the idle between 950-1050 u/min. Rotate the idle track clockwise to increase idle speed and counterclockwise to reduce idle speed. If you have access to your air-fuel mixtures scruwall, you can also shoot it, if not, there is a video below as you gain access, make sure you start with clean or new spark plugs.
Turn the air-fuel mixture screw clockwise until it starts to ground to ground "STOP " does not coat as it will damage the swab at the end, now the screw out 1:1/2 full rotation to start a starting point to establish the engine and check You turn the idle RPM and turn the ID If necessary, turn the air-fuel mixture Screw 1/4 w and let the engine settle for about 10 seconds, turn the slingshot clockwise for a slimmer mixture and counterclockwise for a richer mixture, you Looking for the highest speed your air-fuel mixture Schge can acquire without going at 3 full turns from below and then back to 950-1050 u/min. If you can't detect a speed change and can't stop the engine by sliding the air-fuel mixture all the way into then your Pi The Lot/Low-Speed jet is too big and needs to be replaced by the next size smaller. The final setting should be done with a clean air filter mounted on the carburetor.