Fuel - Stihl BG 56 Instruction Manual

English
► Rotate union nut (5) in direction of arrow until
it snaps audibly into position.
► Continue turning the union nut in direction of
arrow and tighten it down firmly.
4.4 Removing the Elbow
► Shut down the engine.
► Insert a suitable tool through the opening in
the union nut to press down the tab.
► Rotate the union nut in the direction of the
arrow as far as the stop.
► Remove the elbow.
4.5 Removing the Suction Tube
► Shut down the engine.
► Rotate the union nut in the direction of the
arrow as far as the stop.
► Insert a suitable tool through the opening in
the union nut to press down the tab.
► Continue turning the union nut in the direction
of the arrow as far as the next stop.
► Remove the suction tube.
10
► Close the intake screen and lock it in position.
5

Fuel

Your engine requires a mixture of gasoline and
engine oil.
WARNING
For health reasons, avoid direct skin contact with
gasoline and avoid inhaling gasoline vapor.
5.1 STIHL MotoMix
STIHL recommends the use of STIHL MotoMix.
This ready-to-use fuel mix contains no benzol or
lead, has a high octane rating and ensures that
you always use the right mix ratio.
STIHL MotoMix uses STIHL HP Ultra two-stroke
engine oil for an extra long engine life.
MotoMix is not available in all markets.
5.2 Mixing Fuel
NOTICE
Unsuitable fuels or lubricants or mix ratios other
than those specified may result in serious dam‐
age to the engine. Poor quality gasoline or
engine oil may damage the engine, sealing rings,
hoses and the fuel tank.
5.2.1 Gasoline
Use only high-quality brand-name gasoline with
a minimum octane rating of 90 – leaded or unlea‐
ded.
Gasoline with an ethanol content of more than
10% can cause running problems in engines with
a manually adjustable carburetor and should not
be used in such engines.
Engines equipped with M-Tronic deliver full
power when run on gasoline with an ethanol con‐
tent of up to 25% (E25).
5.2.2 Engine Oil
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.
5 Fuel
0458-296-0121-F