Starting The Engine - Stihl Fs 251 R Notice D'emploi

11 Starting the Engine

WARNING
■ Fuel spraying can occur when the engine is
hot and the tank is opened while under pres‐
sure. 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. Always follow the fueling instruc‐
tions in this manual:
– Treat every fuel tank as if it is pressurized,
particularly if it is half full or more.
– Always allow the trimmer / brushcutter to
cool adequately before attempting to open
the fuel tank or refueling. This will take lon‐
ger in hot conditions.
– Never remove the cap by turning it directly
to the open position. Turn it first approxi‐
mately 1/2 of a turn counter‑clockwise to the
vent position to relieve any residual pres‐
sure.
– Never open the fuel tank while the engine is
still hot or running.
– Never open the fuel tank or re-fuel the trim‐
mer / brushcutter 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.
Opening and Refueling
To refuel the trimmer / brushcutter:
► Shut off the engine,
► Allow the trimmer / brushcutter to cool. Never
attempt to remove the cap while the engine is
still hot or running.
► Position the trimmer / brushcutter on a level
surface with the fuel filler cap facing upwards.
► Clean the area around the fuel filler cap with a
slightly dampened cloth.
0458-853-8201-A
12.1.
► While maintaining steady, downward pressure,
slowly turn the cap approximately a 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.
► Remove the fuel filler cap and fill the tank with
fuel.
► Take care not to spill fuel while refilling the
tank.
► Do not overfill the tank. Leave approximately
0.5 in. (13 mm) of air space.
Closing
To close the tank:
► Position the cap on the tank filler neck and
press it down while turning it clockwise by
hand until it is secure.
► Check for tightness.
► If your fuel cap still 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.
11 Starting the Engine
11.1 Starting the Engine
WARNING
■ To reduce the risk of serious or fatal injuries to
the operator or bystanders, keep hands, feet
and other parts of the body away from the cut‐
ting attachment,
cutting attachment while the engine is running.
Never touch the moving cutting attachment
with your hand or any part of your body,
5.7.5.
English
5.7.3. Do not touch the
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