Fueling - Stihl FS 311 Instruction Manual

English

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.
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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
Before fueling, clean the filler cap
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and the area around it to ensure that
no dirt falls into the tank.
Position the machine so that the
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filler cap is facing up.
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
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:
While maintaining steady,
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downward pressure, slowly turn the
cap approximately a 1/2 turn
counter-clockwise.
If any significant venting occurs,
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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.
Turn the cap to the open position
N
only after the contents of the tank
are no longer under pressure.
Remove the fuel filler cap.
N
FS 311