Stihl MS 261 Instruction Manual page 8

English
Fuel
Your STIHL chain saw uses an oil-
gasoline mixture for fuel (see the
chapter on "Fuel" of your instruction
manual).
WARNING
Gasoline is an extremely
flammable fuel. If spilled
and ignited by a spark or
other ignition source, it
can cause fire and seri -
ous burn injury or
property damage. Use
extreme caution when
handling gasoline or fuel
mix. Do not smoke or
bring any fire or flame
near the fuel or the chain
saw. Note that combus -
tible fuel vapor may
escape from the fuel
system.
Fueling Instructions
WARNING
Fuel your chain saw in well-ventilated
areas, outdoors. Always shut off the
engine and allow it to cool before
refueling. Gasoline vapor pressure may
build up inside the fuel tank depending
on the fuel used, the weather conditions
and the tank venting system.
In order to reduce the risk of burns and
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap on your chain saw carefully so as to
allow any pressure build-up in the tank
to release slowly.
6
Flip up the lever and slowly turn left (1)
to the vent position of the cap at about
1/8 turn where the cap is held in place by
the thread. Once the fumes have been
relieved, turn (2) the cap further to the
1/4 turn position where the tool-less cap
can be removed from the tank thread.
Never remove the fuel filler cap by
quickly turning it to the full 1/4 open
position without letting it vent out any
vapor/pressure build-up at the
1/8 position.
Never remove the fuel filler cap while the
engine is running.
Select bare ground for fueling and move
at least 10 feet (3 m) from the fueling
spot before starting the engine. Wipe off
any spilled fuel before starting your
chain saw.
WARNING
Check for fuel leakage
2
while refueling and during
operation. If fuel leakage
is found, do not start or
1
run the engine until the
leak is fixed and any
spilled fuel has been
wiped away. Take care
not to get fuel on your
clothing. If this happens,
change your clothing
immediately.
Different models may be equipped with
different fuel caps.
Toolless cap with grip
WARNING
In order to reduce the risk of fuel spillage
and fire from an improperly tightened
fuel cap, correctly position and tighten
the fuel cap in the fuel tank opening.
To do this with this STIHL cap, raise the
grip on the top of the cap until it is upright
at a 90° angle. Insert the cap in the fuel
tank with the positioning mark on the
grip of the cap and the "open" mark on
the fuel tank opening lining up. Using the
grip, press the cap down firmly while
turning it clockwise as far as it will go
MS 261