Maintenance And Storage - Okay BF 43 Pro Operating Instructions Manual

8. MAINTENANCE AND STORAGE

Correct maintenance is essential to maintain the original
efficiency and safety of the machine over time.
WARNING! During maintenance operations:
- Remove the spark plug cap.
- Wait until the engine is sufficiently cold.
- Use protective gloves when handling the blades.
- Keep the blade protection device on, except when
intervening directly on the blade.
- Never dispose of oils, fuel or other polluting mate-
rials in unauthorised places.
CYLINDER AND SILENCER
To reduce fire risks, periodically clean the cylinder flaps
with compressed air and clear the silencer area to get rid
of sawdust, branches, leaves or other debris.
STARTING SYSTEM
To avoid overheating and damage to the engine, always
keep the cooling air vents clean and free of sawdust
and debris.
The starter rope must be replaced as soon as it shows
signs of wear.
NUTS AND SCREWS
Periodically check that all the nuts and screws are se-
curely tightened and the handgrips are tightly fastened.
CLEANING THE AIR FILTER (Fig. 16)
IMPORTANT: Cleaning the air filter is essential to gua-
rantee the efficiency and duration of the machine. Do not
work with a damaged filter or without a filter, as this could
permanently damage the engine.
It must be cleaned after every 8-10 working hours.
Clean the filter as follows:
- Loosen the knob (3), remove the cover (1) and the
filter element (2).
- Wash the filter element (2) with soap and water. Do
not use petrol or other solvents.
- Leave the filter to dry in the open air.
- Fit the filter element (2) and the cover (1) back on,
tightening the knob (3) again.
CHECKING THE SPARK PLUG (Fig. 17)
Periodically remove and clean the spark plug using a
metal brush to get rid of any deposits.
Check and reset the correct distance between the elec-
trodes.
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 electrodes have burnt or
the insulation has worn, and in any case every 100
working hours.
TUNING THE CARBURETTOR
The carburettor is tuned by the manufacturer to achieve
maximum performance in all situations, with a minimum
emission of toxic gas in compliance with the regulations
in force.
In the case of poor performance contact your Dealer for
a check of the carburetion and engine.
• Tuning minimum speed
WARNING! The cutting device must not move
when the engine is running idle. If the cutting device
moves when the engine is running idle, contact your
dealer to correctly regulate the engine.
ANGLE TRANSMISSION (Fig. 18)
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).
SHARPENING THE 3 POINT BLADE (Fig. 19)
WARNING! Use protective gloves. If 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
It is important to retain the correct balance after shar-
pening.
3 point blades can be used from both sides. When one
side of the points is worn, the blade can be turned and
the other side used.
WARNING! The blade must never be repaired,
but must be replaced as soon as signs of breaking
are noted or the sharpening limit is exceeded.
HEAD LINE REPLACEMENT (Fig. 20)
- Follow the sequence indicated in the figure.
SHARPENING THE LINE CUTTING KNIFE
(Fig. 22)
- Remove the line cutting knife (1) from the guard (2) by
unscrewing the screws (3).
- Fix the line cutting knife in a vice and sharpen it using
a flat file, being careful to retain the original cutting
angle.
- Refit the knife on the guard.
EXTRAORDINARY MAINTENANCE
All maintenance operations not foreseen in this manual
must be performed exclusively by your dealer.
All and any operations performed in unauthorised cen-
tres or by unqualified persons will totally invalidate the
warranty.
STORAGE
After every work stint, clean the machine thoroughly to
remove all dust and debris, and repair or replace any
faulty parts.
GB-10