MS 290, MS 310, MS 390
English
7
Maintenance and repairs
Always switch off the engine before any
repair, cleaning or maintenance work
and any work on the chain. Risk of injury
if the engine starts inadvertently!
Exception: adjustment of carburettor
and idle speed.
The machine must be serviced regularly.
Do not attempt any maintenance or
repair work not described in the
Instruction Manual. All other work should
be carried out by a servicing dealer.
STIHL recommends that maintenance
and repair work be carried out only by
authorised STIHL dealers. STIHL
dealers receive regular training and are
supplied with technical information.
Use only high-quality spare parts.
Otherwise, there may be a risk of
accidents and damage to the machine. If
you have any questions in this respect,
consult a servicing dealer.
Do not modify the machine in any way –
this may increase the risk of personal
injury –risk of accidents!
To reduce the risk of fire due to ignition
outside the cylinder, move the master
control level to STOP, 0 or
†
before
turning the engine over on the starter
when the spark plug boot is removed or
the spark plug is unscrewed!
Do not service or store the machine near
a naked flame – risk of fire due to the
fuel.
Check fuel cap regularly for tightness.
Use only spark plugs that are in perfect
condition and have been approved by
STIHL – see "Specifications".
Check ignition lead (insulation in good
condition, secure connection).
Check that the muffler is in perfect
working condition.
Do not use the machine if the muffler is
damaged or missing – risk of fire,
damage to hearing!
Never touch a hot muffler – risk of burns!
The condition of the anti-vibration
elements influences vibration behaviour
– inspect anti-vibration elements
periodically.
Inspect chain catcher – replace if
damaged.
Switch off the engine
–
To check the chain tension
–
To retension the chain
–
To replace the chain
–
For remedying malfunctions
Observe sharpening instructions – for
safe and proper handling, always keep
the chain and guide bar in flawless
condition. Keep the chain properly
sharpened, tensioned and well
lubricated.
Change chain, guide bar and chain
sprocket in due time.
Regularly check that the clutch drum is
in perfect working condition.
Always store fuel and chain lubricant
only in the specified type of containers
and ensure they are correctly labelled.
Store in a dry, cool and secure place
protected against light and sunlight.
In the event of a chain brake
malfunction, switch off the machine
immediately – risk of injury! Consult a
servicing dealer – do not use the
machine until the malfunction has been
remedied, see "Chain brake".
