CS-310 OPERATION© 11/2014 ECHO Inc.X7503274200 19Spilled fuel is a leading cause of hydrocarbon emissions. Somestates may require the use of automatic fuel shut-off containersto reduce fuel spillage.After use• DO NOT store a unit with fuel in its tank. Leaks can occur.Return unused fuel to an approved fuel storage container.Storage - Fuel storage laws vary by locality. Contact your local government for the laws affecting your area.As a precaution, store fuel in an approved, airtight container. Store in a well-ventilated, unoccupied building,away from sparks and flames.Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when afuel stabilizer is added.Stored two-stroke fuel may separate. ALWAYS shake fuel container thoroughly before each use.Chain LubricantNote: Cap indication - Fuel/oil tanks are indicated by the following illustrationsProper lubrication of the chain while in operation reducesfriction between the chain and the guide bar to a minimumand assures a longer service life.• Use bar and chain oil of high quality for this purpose.• Do not use used or reclaimed oil to avoid various oilerproblems.• Use ECHO bar and chain oil.• When ECHO bar and chain oil is not available: Use motoroil, etc.• Use bar and chain oil of the following grades:• SAE No. 30....in summer• SAE No. 10....in winter or when cutting resinous trees.• When refueling, also refill chain oil.Moving parts can amputate fingers or cause severe injuries. Keep hands, clothing and loose objectsaway from all openings. Always stop engine, disconnect spark plug, and make sure all moving partshave come to a complete stop before removing obstructions, clearing debris, or servicing unit.For more informationscan this QR code.Fuel tank cap Oil tank cap