1. Apply idle speed to the product.
2. Push the start throttle lock.
3. If the start throttle speed is less than 4000 rpm, turn the adjuster screw (A) clockwise. When the cutting attachment starts to rotate, turn the adjuster screw (A) 1/2 turn clockwise.
4. If the start throttle speed is more than 6500 rpm, turn the adjuster screw (A) counterclockwise. When the cutting attachment starts to rotate, turn the adjuster screw (A) 1/2 turn.