Engine Running Behavior; Lubricating The Gearbox; Storing The Machine - Stihl FS 90 Instruction Manual

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Engine Running Behavior

If engine running behavior is
unsatisfactory even though the air filter
is clean and the carburetor is properly
adjusted, the cause may be the muffler.
Have the muffler checked for
contamination (carbonization) by your
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.
32

Lubricating the Gearbox

1
2
Check the grease level regularly –
N
about every 25 hours of operation.
Unscrew the filler plug (1). If no
N
grease can be seen on the inside of
the filler plug, screw the tube (2) of
STIHL gear lubricant (special
accessory) into the filler hole.
Squeeze up to 5 g grease into the
N
gearbox.
NOTICE
Do not completely fill the gearbox with
grease.
Remove the tube of grease (2).
N
Refit the filler plug (1) and tighten it
N
down firmly.

Storing the Machine

For periods of 3 months or longer
Drain and clean the fuel tank in a
N
well ventilated area.
Dispose of fuel properly in
N
accordance with local
environmental requirements.
Run the engine until the carburetor
N
is dry – this helps prevent the
carburetor diaphragms sticking
together.
Remove, clean and inspect the
N
cutting attachment. Coat metal
cutting attachments with corrosion
inhibitor.
Thoroughly clean the machine.
N
Clean the air filter.
N
Store the machine in a dry and
N
secure location – out of the reach of
children and other unauthorized
persons.
FS 90, FS 90 R