Bedienungsanleitung Stihl MS271 (Seite 30 von 132) (Englisch, Spanisch)

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N Shut off the engine.

N Wear work gloves to protect your

hands.

N The chain must fit snugly against

the underside of the bar and it must

still be possible to pull the chain

along the bar by hand.

N If necessary, retension the chain.

A new chain has to be retensioned more

often than one that has been in use for

some time.

N Check chain tension frequently –

see chapter on "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 quality two-stroke

air cooled engine oil.

Use mid-grade unleaded gasoline with a

minimum octane rating of 89 (R+M/2). If

the octane rating of the mid-grade

gasoline in your area is lower, use

premium unleaded fuel.

Fuel with a lower octane rating 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 even

damage the engine. For this reason

STIHL recommends that you use only

high-quality unleaded gasoline!

Gasoline with an ethanol content of

more than 10% can cause running

problems and major damage in engines

with a manually adjustable carburetor

and should not be used in such engines.

Engines equipped with M-Tronic can be

run on gasoline with an ethanol content

of up to 25% (E25).

Use only STIHL two-stroke engine oil or

equivalent high-quality two-stroke

engine oils that are designed for use

only in air cooled two-cycle engines.

We recommend STIHL HP Ultra 2-Cycle

Engine Oil since it is specially

formulated for use in STIHL engines.

Do not use BIA or TCW rated (two-

stroke 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.).

Take care when handling gasoline.

Avoid direct contact with the skin and

avoid inhaling fuel vapor. When filling at

the pump, first remove the canister from

your vehicle and place the canister on

the ground before filling. Do not fill fuel

canisters that are sitting in or on a

vehicle.

The canister should be kept tightly

closed in order to avoid any moisture

getting into the mixture.

The machine‘s fuel tank and the canister

in which fuel mix is stored should be

cleaned as necessary.

Fuel mix ages

Only mix sufficient fuel for a few days

work, not to exceed 3 months of storage.

Store in approved fuel-canisters only.

When mixing, pour oil into the canister

first, and then add gasoline. Close the

canister and shake it vigorously by hand

to ensure proper mixing of the oil with

the fuel.

Checking Chain Tension

143BA007 KN

Fuel

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