FS 70 RC
English
21
WARNING
Direction of rotation is indicated by an
arrow on the inside of the deflector.
N Place the cutting attachment (1) on
the thrust plate (2).
WARNING
Collar (see arrow) must engage the
cutting attachment's mounting hole.
Securing the cutting attachment
N Fit the thrust washer (3) and rider
plate (4) on the shaft (5).
N Block the shaft and screw the
mounting nut (6) on to the shaft
counterclockwise and tighten it
down firmly.
WARNING
If the mounting nut turns too freely, fit a
new one.
Removing the metal cutting attachment
N Block the shaft.
N Unscrew the mounting nut
clockwise.
N Take the parts off the shaft – do not
remove the thrust plate (2).
This engine is certified to operate on
unleaded gasoline and the STIHL two-
stroke engine oil at a mix ratio of 50:1.
Your engine requires a mixture of high-
quality gasoline and two-stroke air
cooled engine oil.
Use mid-grade unleaded gasoline with a
minimum octane rating of 89 ((R+M)/2)
and no more than 10% ethanol content.
Fuel with a lower octane rating may
increase engine temperatures. This, in
turn, increases the risk of 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 and
catalytic converters as well. This could
cause running problems or even
damage the engine. For this reason
STIHL recommends that you use only
high-quality unleaded gasoline!
Gasoline with an ethanol content of
more than 10% can cause running
problems and major damage in engines
with a manually adjustable carburetor
and should not be used in such engines.
The ethanol content in gasoline affects
engine running speed – it may be
necessary to readjust the carburetor if
you use fuels with various ethanol
contents.
Fuel
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