Stihl FS 490 C-M Instruction Manual - Page 32
WARNING, Opening, Refueling, Closing
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English WARNING In order to reduce the risk of fire and other personal injury from escaping gas vapor and fumes, remove the fuel filler cap slowly and carefully so as to allow any pressure build-up in the tank to release slowly. Opening WARNING Never remove the cap by turning it directly to the open position. First allow the power tool to cool adequately and then release any residual pressure by slowly turning the cap approximately 1/2 turn counter-clockwise. Never attempt to remove the cap while the engine is still hot or running. Refueling N If your fuel cap still 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 or replacement. Take care not to spill fuel while fueling and do not overfill the tank - leave approximately 1/2" (13 mm) air space. Closing 002BA447 KN 002BA448 KN WARNING After allowing the power tool to cool, remove the fuel filler cap slowly and carefully to allow any remaining pressure build-up in the tank to release: N While maintaining steady, downward pressure, slowly turn the cap approximately a 1/2 turn counter-clockwise. N If any significant venting occurs, immediately re-seal the tank by turning the cap clockwise to the closed position. Allow the power tool to cool further before attempting to open the tank. N Turn the cap to the open position only after the contents of the tank are no longer under pressure. N Remove the fuel filler cap. WARNING An improperly tightened fuel filler cap can loosen or come off and spill quantities of fuel. To reduce the risk of fuel spillage and fire from an improperly installed fuel cap, tighten the fuel filler cap by hand with as much force as possible: 30 FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L