Mixing Fuel And Refueling The Chain Saw; Stihl Motomix; Mixing Fuel - Stihl MS 500i Manual De Instrucciones

13 Mixing Fuel and Refueling the Chain Saw

13 Mixing Fuel and Refueling the Chain
Saw

13.1 Mixing Fuel

Information on Fuel
Your engine requires a mixture of high-quality gasoline and
2-cycle air cooled engine oil. This engine is certified to
operate on mid-grade unleaded gasoline with a minimum
octane rating of 89 and no more than 10 % ethanol and
2-cycle oil for air cooled engines at a mix ratio of 50:1.
If you mix the fuel yourself, STIHL recommends the following
2-cycle engine oils:
– STIHL HP Ultra 2-Cycle Engine Oil
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.
NOTICE
Some fuel additives not only detrimentally affect elastomers
(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.
Information on Ethanol Content
WARNING
At correct idle speed, the saw chain should not move. To
reduce the risk of personal injury from loss of control and/or
contact with the running chain, have the chain saw inspected
by an authorized STIHL servicing dealer before further use
if the chain moves while the engine is idling.
0458-809-8621-A
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 idle speed and maximum speed of the engine change if
you switch to a fuel with a much higher or lower ethanol
content. This problem can be avoided by always using an
ethanol-free fuel or fuel with consistent ethanol levels.

STIHL MotoMix

STIHL MotoMix is ethanol-free, has a high octane rating and
ensures that you always use the right gasoline/oil mix ratio.
STIHL MotoMix uses STIHL HP Ultra 2-Cycle Engine Oil
suited for high performance engines. For further details, see
www.STIHLusa.com/ethanol.
STIHL recommends using MotoMix in your chain saw. If not
using MotoMix, use only STIHL HP Ultra 2-Cycle Engine Oil
or equivalent high quality 2-cycle engine oils that are
designed for use in air cooled 2-cycle engines.
The use of non-seasonal gasoline blends may increase the
potential for pressure to build in the fuel tank during
operation. For example, using a winter blend during the
summer will increase pressure in the fuel tank. Always use
gasoline blends appropriate to the season, altitude and
other environmental factors.
Do not use BIA or TCW rated (2-cycle water cooled) mix oils
or other mix oils that state they are for use in both water
cooled and air cooled engines (e.g., outboard motors,
snowmobiles, chain saws, mopeds, etc.).
Mixing Fuel
WARNING
Take care when handling gasoline. Avoid direct contact with
the skin and avoid inhaling fuel vapor. Anytime you are filling
a container at the fuel pump, remove the container from your
vehicle and place it on the ground before filling. To reduce
the risk of sparks from static discharge and resulting fire
and/or explosion, do not fill fuel containers that are sitting in
or on a vehicle or trailer.
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