GGP ITALY SPA B 26 J Manuel D'utilisation page 121

cover correctly fitted.
5.2 CLEANING THE ENGINE
AND THE SILENCER
To reduce fire risks, periodically clean the cylin-
der fins with compressed air and clear the silenc-
er area to get rid of sawdust, branches, leaves or
other debris.
5.3 STARTING UNIT
To avoid overheating and damage to the engine,
always keep the cooling air vents clean and free
of sawdust and debris.
If you notice signs of wear on the starter cable,
contact your Dealer for a replacement.
5.4 NUTS AND SCREWS
Periodically check that all the nuts and screws
are securely tightened and the handgrips are
tightly fastened.
5.5 CLEANING THE AIR FILTER (Fig. 15)
IMPORTANT Cleaning the air filter is essential to
guarantee the efficiency and duration of the ma-
chine. Do not work with a damaged filter or with-
out a filter, as this could permanently damage the
engine.
It must be cleaned after every 15 working hours.
Clean the filter as follows:
– L oosen the knob (3), remove the cover (1) and
the filter element (2).
– W ash the filter element (2) with soap and wa-
ter. Do not use petrol or other solvents.
– L eave the filter to dry in the open air.
– F it the filter element (2) and the cover (1) back
on, tightening the knob (3) again.
5.6 CHECKING THE SPARK PLUG (Fig. 16)
Periodically remove and clean the spark plug us-
ing a metal brush to get rid of any deposits.
Check and reset the correct distance between
the electrodes.
Replace the spark plug and fasten it firmly using
the supplied wrench.
The spark plug must be replaced with one with
the same characteristics whenever the elec-
trodes have burnt or the insulation has worn, and
in any case every 100 working hours.
5.7 ANGLE TRANSMISSION (Fig. 17)
Lubricate with lithium-based grease.
Remove the screw (1) and put in the grease,
turning the shaft manually until grease emerges,
then replace the screw (1).
5.8 BLADE MAINTENANCE
5.8.1 Sharpening the 3-point blade
(Fig. 18)
WARNING!
sharpening is done without removing the
blade, disconnect the spark plug cap.
Sharpening must be done taking account of the
type of blade and cutting edges, using a flat file
and working all the points equally.
The references for correct sharpening are given
in Fig. 19:
A = Incorrect sharpening
B = Sharpening limits
C = Incorrect and unequal angles
IMPORTANT It is important to retain the correct
balance after sharpening. For safety reasons,
sharpening and balancing should be done by a
Specialised Centre with suitable skills and equip-
ment for the job; without risking any damage to
the blade which would make it unsafe when used.
3-point blades can be used on both sides. When
one side of the points is worn, the blade can be
turned and the other side used.
WARNING!
paired, but must be replaced as soon as
signs of breaking are noted or the sharpen-
ing limit is exceeded.
5.8.2 Sharpening the 3-point blade
Blades bearing the code indicated on the chart
on page vi should be used on this machine.
Given product evolution, the above mentioned
blades may be replaced in time with others hav-
ing similar interchangeable and operating safety
features.
5.9 HEAD LINE REPLACEMENT (Fig. 19)
– F ollow the sequence indicated in the figure.
5.10 SHARPENING THE LINE CUTTING
KNIFE (Fig. 20)
– R emove the line cutting knife (1) from the
guard (2) by unscrewing the screws (3).
– F ix the line cutting knife in a vice and sharpen
it using a flat file, being careful to retain the
11
Use protective gloves. If
The blade must never be re-