Add fuel if the Toro is low or empty.
Press the Toro's primer bulb five times. Start your Toro.
Allow your Toro to run for about five minutes without adjusting it.
Locate the idle adjustment screw, which is near the carburetor and the primer bulb.
Insert the screwdriver into the tip of the idle adjustment screw. If the timing is running at a low speed, turn the screw about a half-turn to the right. If it's running too fast, turn the screw a half-turn to the left.