Attention - If you are purchasing this for an 05-08, you may need to shave the knob just a little so it will not hit on the tps sensor. Installation Procedure - Remove stock choke cable assembly from the left side of the carb. Carefully remove the o-ring located above the threads of the stock plunger. Place the o-ring above the threads of the pull choke and install pull choke on carb. This choke will lock into the on position so you do not have to hold it while starting the quad.