Using this Blue Diamond® Skid Steer Swing Arm Stump Grinder is quite straightforward. First, make sure your host machine has 50 - 95 HP. You can use either the OEM controls or the universal control box to operate it. Keep the host machine stationary during operation. Adjust the 6 - way cutting position according to the stump's location and shape for the best grinding effect. When it comes to maintenance, check the large - sized components regularly to ensure they are in good condition. Inspect the 30 durable green teeth on the 26″ wheel and replace any that are worn out. Clean the chain guard frequently to prevent debris from building up. Also, follow the flow requirements for your specific model to keep the piston motor running smoothly.