Fuel - Stihl FS 38 Manual De Instrucciones

STIHL FixCut 5-2
5
4
3
1
Slip the thrust plate (2) over the
N
shaft.
Place the mowing head on the
N
thrust plate (2).
WARNING
Collar (see arrows) must engage the
mowing head's mounting hole.
Push the thrust washer (3) over the
N
shaft (1) so it is seated on the base.
Block the shaft.
N
Use the combination wrench (5)
N
(special accessory) to screw the
mounting nut (4) on to the output
shaft and tighten it down firmly.
WARNING
If the mounting nut has become too
loose, fit a new one.
FS 38
NOTICE
Remove the tool used to block the shaft.
Remove the mowing head.
STIHL AutoCut
Hold the mowing head steady.
N
Unscrew the cap counterclockwise.
N
STIHL PolyCut
Block the shaft.
N
Unscrew the mowing head
N
counterclockwise.
STIHL FixCut
2
Block the shaft.
N
Use the combination wrench
N
(special accessory) to loosen and
unscrew the mounting nut
counterclockwise from the output
shaft.

Fuel

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
and should not be used.
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.
WARNING
To reduce the risk of personal injury
from loss of control and/or contact with
the running cutting tool, do not use your
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