ST CS 100 Li 20 A Manuel D'utilisation page 171

• To avoid overheating and damage to the motor
or the battery, always keep the cooling air vents
clean and free of debris.
7.4.2 Cleaning the chain
Remove any traces of sawdust or oil deposits from
the chain every time it is used.
If there is excessive dirt or resin build-up,
disassemble the chain and place it in a container
with a specific cleanser for a few hours. Then
rinse it with clean water and treat it with a suitable
anticorrosive spray, before reassembling on the
machine.
7.5 CHAIN CATCHER
Check the chain stop pin conditions before each
use (Fig. 1.G) and repair in the event of damages.
7.6 MACHINE AND BAR LUBRICATION
HOLES
Before daily use, remove the guard (par. 4.2),
disassemble the bar and check that machine
lubrication holes (Fig. 30.A) and guide bar (Fig.
30.B) are not clogged.
7.7 NUTS AND BOLTS
• Keep all nuts, bolts and screws tight to be sure
the equipment is in safe working condition.
• Check regularly that the handles are fixed firmly.
8. OCCASIONAL MAINTENANCE
8.1 CHAIN DRIVE SPROCKET
Regularly check the condition of the sprocket
with your local dealer and replace it when wear
exceeds the accepted limits.
Do not mount a new chain with a worn
sprocket or vice-versa.
8.2 MAINTENANCE
CHAIN
To ensure that the chainsaw works safely
and efficiently, it is essential that the cutting
means are well-sharpened.
Always wear heavy duty gloves when
handling the bar and chain.
Chain sharpening is necessary when:
OF THE TOOTHED
– The sawdust looks like dust.
– Cutting becomes more difficult.
– The cut is not straight.
– Vibrations increase.
Kickback may occur if the chain is not
sufficiently sharpened
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. 31.A);
3. clean the lubrication holes (Fig. 31.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.
EN - 14