Stihl FB 131 Instruction Manual - Page 20

English Gasoline Oil (STIHL 50:1 or equivalent high-quality oils) Liters 1 5 10 20 Liters 0.02 0.10 0.20 0.40 (ml) (20) (100) (200) (400) US gal. 1 2 1/2 5 US fl.oz. 2.6 6.4 12.8 Dispose of empty mixing-oil containers only at authorized disposal locations. Fueling WARNING Removing the cap on a pressurized fuel tank can result in gasoline, vapors and fumes being forcefully sprayed out from the tank in all directions. The escaping gasoline, vapors or fumes, sometimes referred to as fuel spraying or "geysering," can cause serious personal injury, including fire and burn injury, or property damage. Fuel spraying can occur when the engine is hot and the tank is opened while under pressure. It can occur in hot environments even if the engine has not been running. Spraying is more likely to occur when the fuel tank is half full or more. Avoid Injuries from Fuel Spraying. Always follow the fueling instructions in this manual: - Treat every fuel tank as if it is pressurized, particularly if it is half full or more. - Always allow the power tool to cool adequately before attempting to open the fuel tank or refueling; this will take longer in hot conditions. - Never remove the cap by turning it directly to the open position. Turn it first approximately 1/2 of a turn counter-clockwise to relieve any residual pressure. - Never open the fuel tank while the engine is still hot or running. - Never open the fuel tank or re-fuel the power tool near any sparks, flames or other ignition sources. - Pick the right fuel: use only good quality (89 octane or higher), fresh fuel blended for the season. - Vapor lock: do not remove the fuel cap in an effort to relieve vapor lock. Removing the cap has no effect on vapor lock. - Be aware that fuel spraying is more likely at higher altitudes. Preparations N Before fueling, clean the filler cap and the area around it to ensure that no dirt falls into the tank. N Position the machine so that the filler cap is facing up. 0000-GXX-0476-A0 18 FB 131