F.F. Group GWP 40/79 PLUS Notice Originale page 22

22 | English
Any adjustments or maintenance operations not
described in this manual must be carried out by
your Dealer or a specialized Service Centre with
the necessary knowledge and equipment to en-
sure that the work is done correctly maintaining
the machine's original safety level. Any operations
performed in unauthorized centers or by unqua-
lified persons will totally invalidate the Warranty
and all obligations and responsibilities of the Ma-
nufacturer.
Keep all nuts and screws tight to be sure the ma-
chine is always in safe working condition. Routine
maintenance is essential for safety and for main-
taining a high-performance level.
WARNING
Never use the machine with worn or damaged parts.
Faulty or worn-out parts must always be replaced
and not repaired. Only use original spare parts.
MAINTENANCE SCHEDULE
Frequency
Items
Visual
Complete unit
Ispection
Control Check
handles Operation
Spark arrester
Check
(if available)
Check-
Refill
Εngine oil
Replace
Check
Air filter Clean
Replace
Check-
Spark plug
Adjust
Check-
Fuel line
and filter
Clean **
Check-
Fuel tank
Clean **
Deposit cup
Clean
(if available)
Valve Check-
clearance Adjust **
Combustion Check-
chamber Clean **
*These items should be replaced if needed.
**These operations should be carried out only by authorised
dealer, that have the appropriate tools and the required
mechanical proficiency.
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ENGINE OIL
WARNING
Checking the level and changing the oil should be done
on solid and level ground. The engine has to be sto-
pped at all times. If the engine had been running, it will
be hot and the procedure should be done with care and
necessary precautions in order to avoid burn danger.
NOTE
Drain the used oil while the engine is warm. Warm oil
drains quickly and completely.
To check the oil level:
1. Remove the oil filler cap (Fig. 21.6) from the engi-
ne oil filler neck (Fig. 21.1).
2. Check the oil level. The oil level should reach the
lip (Fig. 21.7) of the oil filler neck. If required, add
enough oil to bring the oil level to the lip of the
oil filler neck, up to the upper level (Fig. 10.3) and
not lower than the lower level (Fig. 10.4).
3. Reposition the oil filler cap and tighten appropri-
ately.
To change the oil:
1. Remove the oil filler cap from the engine oil filler
neck.
2. Place a suitable container (Fig. 21.3) under the oil
drain hole (Fig. 21.2) to catch the used oil.
3. Remove the oil drain plug (Fig. 21.4) and washer
(Fig. 21.5) to allow the oil to drain completely.
4. Reposition the oil drain plug with its washer and
tighten appropriately.
5. Gradually add enough oil to bring the oil level to
the lip of the oil filler neck, up to the upper level
(Fig. 10.3) and not lower than the lower level (Fig.
10.4).
6. Reposition the oil filler cap and tighten appropri-
ately.
NOTE
If the engine frequently works under extremely dusty
or other severe circumstances, change the engine oil
every 25 hours.
WARNING
Running the engine will low oil level will cause engine
damage.
AIR FILTER
WARNING
Operating the engine without an air cleaner, or with a
damaged air cleaner, will allow dirt to enter the engine,
causing rapid engine wear.
To check, clean or change the air filter:
1. Remove the air filter cover (Fig. 22.1).
2. Make sure that the air filter element (Fig. 22.2) is
free from dirt and in a good condition. If it is dirty,
remove and clean it.
To clean a foam air filter element wash it with
f
home detergent and hot water and let it dry.
Then soak it in clean saturated engine oil and
gently squeeze out excess oil. If required, replace
it with a new one.
To clean a paper air filter element, clean light dirt
f
by gently taping it a few times on a hard surface
and replace if heavy dirt is present.
3. Clean the inside of the air filter case and co-
ver from dirt with a soft cloth. If the engine is
equipped with an oil bath type air filter, replace
the oil with new engine oil.