Instruction Manual

GS 461
English
21
N Check tension of diamond abrasive
chain – diamond abrasive chain can
be pulled across the guide bar by
hand
A new diamond abrasive chain must be
retensioned more frequently than one
that has been in use already for an
extended period.
N Check chain tension frequently –
see "Operating Instructions"
N Switch off the engine
N Diamond abrasive chain can sag a
maximum of a = 0.6 in (15 mm)
N Retension diamond abrasive chain
if necessary – see "Tensioning the
diamond abrasive chain"
If the diamond abrasive chain sags too
much, this leads to significantly
increased wear of the cutting
attachment.
A new diamond abrasive chain must be
retensioned more frequently than one
that has been in use already for an
extended period.
N Check chain tension frequently –
see "Operating Instructions"
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.
NOTICE
Fuel with an octane rating below 89 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 damage the
engine. For this reason STIHL
recommends that you use only quality
unleaded gasoline.
NOTICE
Gasoline with an ethanol content of
more than 10% can cause running
problems and major damage in engines
and should not be used.
For further details, see
www.STIHLusa.com/ethanol
The ethanol content in gasoline affects
engine speed – it may be necessary to
readjust the carburetor if you use fuels
with various ethanol contents.
2411BA0045 KN
Check Tension of Diamond
Abrasive Chain
a
2411BA016 KN
Fuel