Stiga BC 646 Serie Manual De Instrucciones página 40

7.5 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 ANGLE TRANSMISSION
LUBRICATION:
Lubricate with lithium based grease.
Remove the screw (Fig.
grease by rotating the shaft by hand until the
grease comes out; then refit the screw (Fig.
8.2 FLEXIBLE DRIVE-SHAFT
LUBRICATION
Lubricate with lithium-based grease.
1. Unhook the tube (Fig. 23.B)
from the engine side;
2. extract the flexible drive-shaft (Fig. 23.C);
3. apply grease rotating the drive-
shaft manually until the grease is
distributed over the entire surface;
then reassemble (par. 4.6).
8.3 CLEANING THE AIR FILTER
IMPORTANT Cleaning the air filter is
essential for correct operation and durability
of the machine. NEVER work without a filter
or with a damaged filter to avoid causing
irreparable damage to the engine.
Cleaning must be performed
every 15 hours of work.
To clean the filter:
1. unscrew the screws (Fig. 24.B),
remove the cover (Fig. 24.A) and
remove the filter element (Fig.24.C);
2. blow compressed air from the inside
to remove dust and debris (Fig. 25).
3. refit the filer element (Fig. 24.C)
and the cover (Fig. 24.A); then
tighten the screws (Fig.24.B);
8.4 SPARK PLUG
Remove and clean the spark plug at
regular intervals; remove any deposits
with a wire brush (Fig. 26).
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23.A) and insert the
23.A).
Check and reset the correct gap
between the electrodes (Fig. 26).
Refit the spark plug and tighten it
fully using the wrench supplied.
The spark plug must be replaced with
one having similar characteristics if burnt
electrodes or deteriorated insulation are
found or after every 100 hours of operation.
8.5 CUTTING MEANS MAINTENANCE
When servicing the cutting means, bear
in mind that it can still move even if the
spark plug cable been disconnected.
Cutting means displaying the code
indicated on the Technical Data table
should only be used on this machine.
Given product evolution, the cutting means
mentioned in the "Technical Data" table may
be replaced in time with others having similar
interchangeable and operating safety features.
Do not touch the cutting means until the
spark plug cable has been disconnected and
the cutting means is completely stationary.
Wear protective gloves.
8.5.1 Blade sharpening/balancing
For safety reasons, sharpening and
balancing should be performed by an
Authorised Service Centre with suitable
skills and equipment for the job; without
risking any damage to the blade which
would make it unsafe when used.
3 point, 4 point and 8 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.
When both sides of the points are
worn, have them sharpened.
The saw blade is not reversible and
therefore should only be used on one side.
8.5.2 Blade replacement
The blade must never be repaired,
but must be replaced as soon as
EN - 15