Starting And Stopping The Engine - Stihl FS 511 C-M Instruction Manual

9 Starting and Stopping the Engine

If you mix the fuel yourself, use only STIHL two-
stroke engine oil or another high-performance
engine oil in accordance with JASO FB, JASO
FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-L-
EGD.
STIHL specifies STIHL HP Ultra two-stroke
engine oil or an equivalent high-performance
engine oil in order to maintain emission limits
over the machine's service life.
► Make sure that the octane number of the gas‐
oline is at least 90 RON and the ethanol con‐
tent is not more than 10%.
► Make sure the two-stroke engine oil you are
using meets the requirements.
► Depending on the desired amount of fuel,
determine the correct amounts of two-stroke
engine oil and gasoline in a mixing ratio of
1:50. Examples for fuel mixes:
– 20 ml Two-stroke engine oil, 1 l gasoline
– 60 ml Two-stroke engine oil, 3 l gasoline
– 100 ml Two-stroke engine oil, 5 l gasoline
► Pour two-stroke engine oil into a clean
approved fuel canister first and then add gaso‐
line.
► Stir the fuel before topping up.
8.2 Fueling the Trimmer
► Shut off the engine.
► Place your trimmer on a level surface so that
the fuel tank cap faces up.
► Use a damp cloth to clean the tank cap and
the area around it.
► Turn the tank cap counterclockwise until it can
be removed.
► Remove the fuel tank cap.
0458-856-0121-A. VA0.B21.
NOTICE
■ Bright light, sunlight and extreme tempera‐
tures can cause the fuel mix to separate much
faster. The trimmer can be damaged if it is
used with a fuel mix that has become separa‐
ted.
► Thoroughly mix the fuel.
► Do not use fuel mix that has been stored for
more than 30 days.
► Fill the tank to within no more than 15 mm
of the brim, taking care not to spill any fuel.
► Fit the tank cap on the tank opening.
► Turn the tank cap clockwise and tighten it
down firmly by hand.
The fuel tank is closed.
9 Starting and Stopping the
Engine
9.1 Starting the engine
► Place the trimmer on a level surface so that
the cutting attachment does not touch the
ground or other objects.
► Remove the transport guard.
2
► Depress the manual fuel pump (1) at least 5
times.
► If the engine is warm: Leave the choke lever
(2) in position .
► If the engine is at ambient temperature: Push
in the choke lever (2) at the edge and set it in
position .
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