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9 Mixing Fuel and Refueling the Brushcutter
STIHL recommends you use STIHL MotoMix.
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.
► Make sure that the octane number of the gasoline is at
least 90 RON and the ethanol content is not more than
10%.
► Make sure the two-stroke engine oil you are using is
suitable for trimmers.
► Depending on the required amount of fuel, determine the
correct amounts of two-stroke engine oil and gasoline in a
mix ratio of 50:1. Examples for fuel mixes:
– 1 liter gasoline, 20 ml two-stroke engine oil
– 3 liters gasoline, 60 ml two-stroke engine oil
– 5 liters gasoline, 100 ml two-stroke engine oil
► Pour two-stroke engine oil into a clean approved fuel
canister first and then add gasoline.
► Thoroughly mix the fuel.
9.2 Fueling the Trimmer
► Shut off the engine.
► Place your trimmer on a level surface so that the fuel tank
cap faces up.
► Use a damp cloth to clean the tank cap and the area
around it.
► Turn the tank cap counterclockwise until it can be
removed.
► Remove the fuel tank cap.
NOTICE
Bright light, sunlight and extreme temperatures can cause
the fuel mix to separate much faster. The trimmer can be
damaged if it is used with a fuel mix that has become
separated.
► Thoroughly mix the fuel.
► Do not use fuel mix that has been stored for more than 30
days.
► Fill the tank to within no more than 15 mm of the brim,
taking care not to spill any fuel.
► Fit the tank cap on the tank opening.
For video on this chapter visit
www.stihl.com/instruction-video.
0000-GXX-4727-A0
0000-GXX-4728-A0
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