29
HL 75, HL 75 K
English / USA
The blades must be resharpened if
cutting performance and behavior begin
to deteriorate (i.e. if blades frequently
snag on branches).
It is best to have the cutting blades
resharpened by your STIHL dealer on a
workshop sharpener.
It is also possible to use a flat crosscut
sharpening file. See “Specifications” for
prescribed sharpening or filing angle.
:
Always file towards the cutting
edge.
:
The file only sharpens on the
forward stroke - lift it off the blade on
the backstroke.
:
Use a whetstone to remove burr
from cutting edge.
:
Remove as little material as
possible.
:
After sharpening, clean filing or
grinding dust off the cutting blades
and lubricate with grease.
Do not operate your machine with
dull or damaged cutting blades.
This may cause overload and will
give unsatisfactory cutting results.
During break-in period
A factory new machine should not be run
at high revs (full throttle off load) for the
first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During operation
After a long period of full-throttle
operation, allow engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After finishing work
Storing for short period:
Wait for engine to cool down. To avoid
condensation, fill the fuel tank and keep
the unit in a dry place until you need it
again. Storing for a long period:
see chapter "Storing the Machine".
For periods of about 3 months or longer
:
Drain and clean the fuel tank in a
well ventilated area.
:
Run engine until carburetor is dry -
this helps prevent carburetor
diaphragms sticking together.
:
Clean the cutting blades, check
condition and spray with STIHL
resin solvent.
:
Thoroughly clean the machine - pay
special attention to the cylinder fins
and air filter.
:
Store the machine in a dry, high or
locked location - out of the reach of
children and other unauthorized
persons.
Sharpening Instructions
Operating Instructions
Storing the Machine
