Stihl FS 56C Instruction Manual - Page 10
Installing the Threaded Fuel Filler Cap, WARNING, Damaged or Broken Cap, Vapor Lock, Before
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English Installing the Threaded Fuel Filler Cap WARNING Unit vibrations can cause an improperly tightened fuel filler cap to loosen or come off and spill quantities of fuel. To reduce the risk of fuel spillage and fire, tighten the fuel filler cap by hand with as much force as possible. Damaged or Broken Cap If your fuel cap does not tighten properly, it may be damaged or broken. Stop using the power tool and take it to your authorized STIHL dealer for repair. Vapor Lock WARNING Vapor lock occurs when fuel in the fuel line or carburetor vaporizes, causing bubbles to block the free flow of liquid fuel into the carburetor. Vapor lock cannot be relieved or affected by opening the fuel tank. Removing the fuel filler cap without first allowing the power tool to cool adequately can result in fuel spraying. Always follow the instructions in this section when removing the fuel cap. To relieve vapor lock: - Press the manual fuel pump bulb at least 20 to 30 times - even if the bulb is already filled with fuel - to clear the vapor and send liquid fuel into the carburetor. Then start the power tool. For specific starting instructions, see the appropriate section of your instruction manual. - If the manual fuel pump bulb will not be filled, place the Choke Lever to the cold start position g and pull the starter cord until the engine runs. If the engine does not fire after 10 pulls in the cold start position g, place the Choke Lever to the warm start position < and start the engine in the warm start position
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