CS-310 TABLE OF CONTENTSX7503275401 3© 02/2019 ECHO Inc.Maintenance ............................................................................................. 41Skill Levels ........................................................................................ 41Maintenance Intervals ....................................................................... 42Carburetor Adjustment ...................................................................... 43Air Filter ............................................................................................. 44Spark Plug ......................................................................................... 45Check Fuel System ........................................................................... 45Fuel Filter .......................................................................................... 45Oil Filter ............................................................................................. 46Guide Bar .......................................................................................... 46Sprocket ............................................................................................ 46Cooling System Cleaning .................................................................. 47Spark Arrestor Muffler ....................................................................... 47Spark Arrestor Screen ....................................................................... 48Exhaust Port Cleaning....................................................................... 48Setting The Saw Chain...................................................................... 49Troubleshooting ........................................................................................ 52Storage ..................................................................................................... 54Long Term Storage (Over 30 Days) .................................................. 54Specifications ........................................................................................... 55Product Registration ................................................................................. 56Notes......................................................................................................... 58