Using the SFG - 1813 walk - behind saw is easy. First, make sure the fuel tank is filled with the right amount of fuel (6.1 L capacity). Check the water inlet (3/4' G) if you are using the water function. Start the Honda GX390 engine and adjust the cutting position according to your project. When using it, always wear safety gear like goggles and gloves. For maintenance, clean the saw regularly after each use. Check the blade and engine parts periodically. If you are using the water tank, empty it after use to prevent rusting. This will keep your saw in good condition and ready for the next project.