Scheppach MFH5300-4BP Traduction Des Instructions D'origine page 40

5. Now, place the line spool (5) on the tapered
spring, and guide both lines each through the
round metal lugs at the line spool housing.
6. Then place the spool cover on the new line spool
(5). Turn it so that the plates of the spool cover are
pushed with the springs in the line spool housing.
7. Now, press the spool cover together with the line
spool, until it engages in the line spool housing.
8. The knife (A) in the protective hood (18) shortens
the trimming line to the correct length, when the
engine starts again.
Grinding the safety hood blade Fig. 25 A
The safety hood blade can become blunt over time.
• When you notice this, undo the screw holding the
safety hood blade on the safety hood.
• Clamp the blade in a vise.
• Sharpen the blade with a flat file and make sure
that the angle of the cutting edge is not altered in
the process. File in one direction only.
• Important! Install the cutting knife again
Replacing and resharpening the cutting blade at the
end of the mowing season
Grinding the cutting blade (17)
If the blades become slightly dull, you can sharpen
them yourself.
• Fasten the blade in a vice.
• Grind all 3 cutting unit blades using a flat file and
make sure to maintain the angle of the cutting
edge. (~25°) Only file in one direction.
• Replace the blades after sharpening them five
times at the latest.
Replacing and resharpening the cutting blade at the
end of the mowing season always resharpen the cut-
ting blade or, if required, replace the cutting blade
with a new one.
Unbalanced blades will cause the brush cutter to vi-
brate violently-risk of accident!
Lubricate angle transmission, Brush cutter
Fig. 8 (O)
Lubricate with lithium-based grease. Remove the
screw and put in the grease, turning the shaft manu-
ally until grease emerges, then replace the screw.
Attention! Fill only a small amount of grease. Do not
overfill.
Change and clean the spark plug Fig. 37 - 38
Check the spark plug air gap at least once a year or
when the engine starts poorly. The correct gap be-
tween ignition flag and ignition contact is 0.25"/0.63
mm.
• Wait until the engine has cooled down completely.
• Pull the spark plug cap off the spark plug, and
use the supplied spark plug wrench to remove the
spark plug by turning.
40 GB
• When the electrode is severely worn out or reveals
a strong incrustation, the spark plug must be re-
placed with an equivalent plug.
• A strong incrustation of the spark plug can be
caused by: Amount of oil is too high in the gasoline
mix, poor oil quality, old gasoline mix, or plugged
up air filter.
• Screw the spark plug by hand completely into the
thread. (Avoid jamming it)
• Use the supplied spark plug wrench to tighten the
spark plug.
• When using a torque wrench, the tightening torque
is 12-15 Nm.
• Plug the spark plug socket correctly on the plug.
Clean the air filter Fig. 39 - 42
Soiled air filters reduce the engine power by sup-
plying too little air to the carburetor. Dust and pollen
plug up the pores of the filter made of foamed plastic.
Regular checks are therefore essential.
• Unclip the air filter cover and remove the sponge
filter element.
• To avoid objects falling into the air tank, replace
the air filter cover.
• Wash the filter element in warm soap water, rinse
and allow drying naturally.
Important: Never clean the air filter with petrol or
inflammable solvents.
In order not to shorten the service life of the engine,
a damaged air filter must be replaced at once.
m Warning!
Never run the engine without the air filter ele-
ment installed.
Care of the guide rail
Turn the rail around every time you have the chain
sharpened or replaced. This will avoid a one-sided
wear of the rail, especially at the top and bottom.
Regularly clean
1 = the opening for the oil supply
2 = the oil passage
3 = the raceway groove of the rai
Servicing and sharpening of saw chain
The correct sharpened chain
A properly sharpened chain goes way through the
wood and it requires very little pressure. Do not work
with a dull or damaged chain. It increases physical
exertion, increase the vibrations and leads to unsat-
isfactory results and higher wear.
• Clean the chain.
• Check it.
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