Stihl FS 40 Notice D'emploi page 16

English
Adjusting Nylon Line
STIHL AutoCut
2
1
N Hold the rotating mowing head
above the ground – tap it on the
ground once – about 3 cm fresh line
is advanced.
N The blade (1) on the deflector (2)
trims surplus line to the correct
length – avoid tapping the mowing
head more than once at a time.
Line feed operates only if both lines still
have a minimum length of 2.5 cm.
If the line is shorter than 2.5 cm:
To reduce the risk of injury,
always shut off the engine before
adjusting the mowing line by
hand.
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N Turn the trimmer on its back.
N Press down the cap on the spool as
far as stop.
N Pull the ends of the lines out of the
spool.
If the spool is empty, see "Replacing
Nylon Line".
All other mowing heads
Refer to the instructions supplied with
the mowing head.
To reduce the risk of injury,
always shut off the engine before
adjusting the mowing line by
hand.
Replacing Nylon Line / Polymer
Blades
STIHL AutoCut
See chapter on "Replacing Nylon Line".
STIHL PolyCut, FixCut
Refer to the instructions supplied with
the mowing head.
Fuel
This engine is certified to operate on
unleaded gasoline and with the mix ratio
50:1.
Your engine requires a mixture of high-
quality premium gasoline and high-
quality two-stroke air-cooled engine oil.
Use premium branded unleaded
gasoline with a minimum octane rating
of 89 RON.
Note: Models equipped with a catalytic
converter require unleaded gasoline. A
few tankfuls of leaded gasoline can
reduce the efficiency of the catalytic
converter by more than 50%.
Fuel with a lower octane rating may
result in preignition (causing "pinging")
which is accompanied by an increase in
engine temperature. This, in turn,
increases the risk of the piston seizure
and damage to the engine.
The chemical composition of the fuel is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines etc.), but magnesium castings as
well. This could cause running problems
or even damage the engine. For this
reason it is essential that you use only
high-quality fuels!
Fuels with different percentages of
ethanol are being offered. Ethanol can
affect the running behaviour of the
engine and increase the risk of lean
seizure.
Use only STIHL two-stroke engine oil or
equivalent high-quality two-stroke air-
cooled engine oils for mixing.
FS 40, FS 40 C, FS 50, FS 50 C