Scheppach MFH5300-4BP Originalanleitung Seite 38

Unbalanced blades will cause the brush cutter to vibrate
violently-risk of accident!
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 between
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.
• When the electrode is severely worn out or reveals a
strong incrustation, the spark plug must be replaced
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 supplying
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 element
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
38 GB
Servicing and sharpening of saw chain
The correct sharpened chain
Working effectively with the chainsaw is only possible if
the chain is in good condition and
sharp. This also reduces the risk of kickback. The chain
can be re-sharpened by any dealer. Do not attempt
to sharpen the chain yourself unless you have the
necessary special tools and experience. 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 unsatisfactory results and
higher wear.
• Clean the chain.
• Check it.
• Replace damaged or worn parts with matching spare
• Sharpening a chain should be performed only by
• Select the appropriate tools for the chain pitch
The chain pitch (for example 3/8 ") is highlighted in the
depth of each blade.
Use only special files for chainsaws! Other files have the
wrong shape and the wrong cut.
Select the file according to the diameter of your chain
pitch. Make sure to observe the following angle when
sharpening the chain diameter.
A = filing angle
B = the angle of the side plate
2
The angle must also be maintained for all knives.
For irregular angles, the chain is run irregularly, wear
quickly and break down prematurely.
Since these requirements can only be met with sufficient
and regular exercise:
• A File Holder must be used when sharpening the saw
1
3
• Hold the file horizontally (at a right angle to the guide
parts they are in the shape and size of the original
parts as necessary.
experienced users!
Notice. Below the angle and dimensions If the chain
is not properly sharpened or the depth is too small,
there is a higher risk of reversion effects and resulting
injuries! The chain cannot be fixed on the guide rail. It
is therefore best to remove the chain from the rail and
then sharpen.
sharpening tool. See "Specifications" for the allowed
chain pitches.
chain by hand. The correct filing angle marked on it.
rail) and file according to the angle mark on the file
holder. Support the file holder on the top plate and