Owner's Manual

HT 250
English
30
Replacing a Broken Rewind Spring
N Remove the rope rotor as described
in "Replacing the Starter Rope".
N Take out the screws (7).
N Remove the spring housing and
pieces of spring.
N Lubricate the new, ready-to-fit
replacement spring in the new
spring housing with a few drops of
resin-free oil – see "Special
Accessories".
N Place the replacement spring with
spring housing in position – bottom
plate facing up.
If the spring pops out of the housing
during installation: Refit it clockwise,
starting outside and working inwards.
N Fit the screws.
N Refit the rope rotor as described in
"Replacing the Starter Rope".
N Tension the rewind spring.
N Fit the fan housing.
For periods of 3 months or longer
N Drain and clean the fuel tank in a
well ventilated area.
N Dispose of fuel properly in
accordance with local
environmental requirements.
N Run the engine until the carburetor
is dry – this helps prevent the
carburetor diaphragms sticking
together.
N Remove the saw chain and guide
bar, clean them and spray with
corrosion inhibiting oil.
N Thoroughly clean the machine –
pay special attention to the cylinder
fins and air filter.
N If you use a biological chain and bar
lubricant, e.g. STIHL BioPlus,
completely fill the chain oil tank.
N Store the machine in a dry, high or
locked location, out of the reach of
children and other unauthorized
persons.
N Remove the chain sprocket cover,
chain and guide bar.
Replace the chain sprocket
– after using two saw chains or
sooner
– if the wear marks (a) are deeper
than 0.02 in (0.5 mm) since this
would reduce the life of the chain.
Use a gauge (special accessory) to
check the depth of the wear marks.
It is best to use two saw chains in
rotation with one sprocket.
STIHL recommends the use of original
STIHL chain sprockets.
The bits of the spring may still be
under tension and could fly apart
when you remove the rope rotor
and spring housing. To reduce
the risk of injury, wear face
protection and work gloves.
7
7
271BA053 KN
Storing the Machine Checking and Replacing
the Chain Sprocket
a
000BA054 KN