Lubricating The Gearbox; Storing The Machine; Sharpening Metal Cutting Blades - Stihl FS 91 Manual De Instrucciones

Lubricating the Gearbox

1
Check grease level after every 25 hours
of operation and re-lubricate if
necessary.
Remove the screw plug (1).
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If no grease can be seen on the
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inside of the screw plug (1): Screw
the tube (2) of STIHL gear lubricant
(special accessory) into the filler
hole.
Squeeze no more than 5 g (1/5 oz)
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grease into the gearbox.
NOTICE
Do not completely fill the gearbox with
grease.
Unscrew the tube (2).
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Insert the screw plug (1) and tighten
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it down firmly.
FS 91, FS 91 R

Storing the Machine

For periods of about 3 months or longer
Drain and clean the fuel tank in a
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well ventilated area.
Dispose of fuel properly in
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accordance with local
environmental requirements.
Run the engine until the carburetor
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is dry – this helps prevent the
carburetor diaphragms sticking
together.
Remove, clean and inspect the
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cutting attachment. Coat metal
cutting attachments with corrosion
inhibitor.
Thoroughly clean the machine – pay
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special attention to the cylinder fins
and air filter.
Store the machine in a dry and
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secure location – out of the reach of
children and other unauthorized
persons.
Sharpening Metal Cutting
Blades
Use a sharpening file (see "Special
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Accessories") to sharpen dull
cutting attachments. In case of
more serious wear or nicks:
Resharpen with a grinder or have
the work done by a dealer – STIHL
recommends a STIHL servicing
dealer.
Sharpen frequently, take away as
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little metal as possible – two or three
strokes of the file are usually
enough.
1
2
1
2
Resharpen the teeth (1) uniformly –
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do not alter the contour of the parent
blade (2) in any way.
See cutting attachment packaging for
additional sharpening instructions. Keep
the packaging for future reference.
English
1
2
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