Bedienungsanleitung Stihl FS 90 (Seite 29 von 116) (Englisch, Spanisch)

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FS 90, FS 90 R

English

WARNING

If the mounting nut has become too

loose, fit a new one.

NOTICE

Remove the tool used to block the shaft.

Removing the Metal Cutting Attachment

WARNING

Wear protective gloves to reduce the

risk of direct contact with the sharp

cutting edges.

N Block the shaft.

N Unscrew the mounting nut

clockwise.

N Remove cutting attachment and its

mounting hardware from the

gearbox – but do not remove the

thrust plate (7).

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 two-stroke air

cooled engine oil.

Use mid-grade unleaded gasoline with a

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

and no more than 10% ethanol content.

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

and should not be used.

For further details, see

www.STIHLusa.com/ethanol

The ethanol content in gasoline affects

engine running speed – it may be

necessary to readjust the carburetor if

you use fuels with various ethanol

contents.

WARNING

To reduce the risk of personal injury

from loss of control and / or contact with

the running cutting tool, do not use your

unit with incorrect idle adjustment. At

correct idle speed, the cutting tool

should not move.

If your power tool shows an incorrect idle

adjustment, have your STIHL dealer

check your power tool and make proper

adjustments and repairs.

The idle speed and maximum speed of

the engine change if you switch from a

fuel with a certain ethanol content to

another fuel with a much higher or lower

ethanol content.

This problem can be avoided by always

using fuel with the same ethanol

content.

Use STIHL HP Ultra oil or ask your

dealer for an equivalent high quality oil

to ensure the maximum performance of

the product for the full lifetime.

To meet the requirements of EPA

40CFR90/1054 we recommend to use

STIHL HP Ultra oil.

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 container

from your vehicle and place the

container on the ground before filling. To

reduce the risk of sparks from static

Fuel

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