ST MP 500 Li 48 Manuel D'utilisation page 137

IMPORTANT It is recommended to have an
Authorised centre sharpen the chain using the
right tools to ensure minimum removal of material
and even sharpness on all the cutting edges.
8.2.1 Replacing the toothed chain
Replace the chain whenever:
• the length of the cutting edges
reduces to 5 mm or less;
• there is too much play between
the links and the rivets.
• the cutting speed is too slow and the
repeated sharpening does not improve
the cutting speed. The chain is worn.
IMPORTANT After replacing the chain,
its tension level must be checked more
frequently due to settling of the chain.
8.3 GUIDE BAR MAINTENANCE
Any work on the guide bar requires
NOTE
specific experience and special tools in order
to achieve top workmanship standards; for
safety purposes, we recommend you contact
your dealer to ensure work is done correctly.
To avoid asymmetrical wear on the bar,
make sure it is turned over periodically.
To keep the bar in perfect working
order, proceed as follows:
1. grease the bearings on the nose sprocket
(if present) with the syringe (not included).
2. clean the bar groove with the scraper
(not included) (Fig. 21.A);
3. clean the lubrication holes (Fig. 21.B);
4. with a flat file, remove burr from the
edges and level off the guides.
8.3.1 Replacing the bar
Replace the bar whenever:
• the groove is not as deep as the height of the
drive links (which must never touch the bottom);
• the inside of the guide is worn enough
to make the chain lean to one side.
9. STORING
IMPORTANT The safety regulations to
follow for putting into storage are described
in paragraph 2.4. Strictly comply with these
instructions to avoid serious risks or dangers.
9.1 STORING THE MACHINE
When the machine is to be stored away:
1. Remove the battery from its
housing and recharge it;
2. Mount the bar cover.
3. Wait until the motor is sufficiently cold;
4. Clean (par. 7.4).
5. Check there are no loose or damaged
components. If necessary, replace the
damaged components and tighten
any screws and loose bolts or contact
the authorised service centre.
6. Store the machine:
– in a dry place
– protected from inclement weather
– in a place where children cannot get to it
– making sure that keys or tools used
for maintenance are removed.
9.2 STORING THE BATTERY
The battery must be kept in a cool,
shaded place without humidity.
NOTE If unused for any length of
time, recharge the battery every two
months to prolong its working life.
10. HANDLING AND TRANSPORTATION
Whenever the machine is to be handled,
raised, transported or tilted you must:
• Stop the machine;
• Wait until the chain is stationary;
• Remove the battery from its
housing and recharge it;
• Mount the bar cover;
• Wait until the motor is sufficiently cold;
• Wear heavy work gloves;
• Only hold the machine using the hand
grips and position the bar in the opposite
direction to that used during operation;
When transporting the machine
on a vehicle, always:
• fasten the machine securely
with cables or chains;
• position it so that it does not
cause a hazard to anyone
11. ASSISTANCE AND REPAIRS
This manual provides all the necessary
information to run the machine and for correct
basic maintenance operations which can
be performed by the user. Any regulations
and maintenance operations not described
herein must be carried out by your Dealer
or Authorised Service Centre, which have
the necessary knowledge and equipment to
ensure that the work is carried out correctly,
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