Disengaging The Chain Brake; Maintaining The Chain Brake; Mixing Fuel And Refueling The Chain Saw - Stihl Ms 162 Notice D'emploi

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12.2

Disengaging the Chain Brake

WARNING
■ Before disengaging the chain brake and accel‐
erating the engine, be sure that the guide bar
and saw chain are clear of you and all other
obstructions and objects, including the ground,
5.6.
Disengaging the chain brake unlocks the chain.
To disengage the chain brake:
► Pull the front hand guard toward the front han‐
dle.
You will hear an audible click when the front
hand guard reaches the unlocked position. In
this position, the chain brake is disengaged and
the engine can be accelerated.
12.3

Maintaining the Chain Brake

WARNING
■ An improperly maintained chain brake may
increase the time needed to stop the saw
chain after activation, or it may not activate or
stop the chain at all,
subject to wear, depending on the amount of
usage, conditions under which the saw is used
and other factors. Excessive wear will reduce
the effectiveness of the chain brake and can
render it inoperable.
► Your chain saw should be returned to your
authorized STIHL servicing dealer for periodic
inspection and servicing of the brake system
according to the following schedule:
– Heavy Usage: every 3 months
– Part-Time Usage: every 6 months
– Occasional Usage: every 12 months
30
6.2. The chain brake is

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 unlea‐
ded 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
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 dam‐
age to the engine. The chemical composition
of the fuel is also important.
NOTICE
■ 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.
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, ensure proper idle adjustment
before using your chain saw,
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 car‐
buretor if you use fuels with varying ethanol con‐
tent.
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
22.2.
0458-200-8221-A