0458-838-8601-A
13
English
5 IMPORTANT SAFETY INSTRUCTIONS
￭ After allowing the trimmer / brushcutter to cool, remove
the fuel filler cap slowly and carefully to allow any
remaining pressure build-up in the tank to release:
– While maintaining steady, downward pressure,
slowly turn the cap approximately 1/2 turn counter-
clockwise.
– If any significant venting occurs, immediately re-seal
the tank by turning the cap clockwise to the closed
position. Allow the trimmer / brushcutter to cool
further before attempting to open the tank.
– Turn the cap to the open position only after the
contents of the tank are no longer under pressure.
– Never remove the cap by turning it directly to the
open position without first allowing the trimmer /
brushcutter to cool adequately and then releasing
any residual pressure by slowly turning it
approximately 1/2 turn counter-clockwise.
– Never attempt to remove the cap while the engine is
still hot or running.
Installing the Threaded 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,
correctly position the cap in the fuel filler opening and
tighten it by hand until it is secure.
Damaged or Broken Cap
WARNING
￭ If your fuel cap does not tighten properly, it may be
damaged or broken. Stop using the trimmer / brushcutter
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 trimmer / brushcutter 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 trimmer / brushcutter. For
specific starting instructions, see the appropriate
section of your instruction manual.
– If the manual fuel pump bulb does not fill after being
depressed several times, place the Choke Lever to
the start position and pull the starter cord until
the engine runs.
– If the engine does not fire after 10 pulls in the start
position start the engine in the run position .
– If your trimmer / brushcutter will not restart, or if
vapor lock occurs again, the trimmer / brushcutter is
being used in conditions too extreme for the fuel
being used. Discontinue use and let the engine cool
completely before attempting to start the trimmer /
brushcutter.
– Using good quality, fresh fuel (stored less than 30
days) also can help reduce the occurrence of vapor
lock.
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