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Scheppach MFH3300-4P - Servicing and sharpening of saw chain

Scheppach MFH3300-4P
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www.scheppach.com / service@scheppach.com / +(49)-08223-4002-99 / +(49)-08223-4002-58
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Attention! Fill only a small amount of grease. Do not
overll.
Change and clean the spark plug Fig. 30-31
Check the spark plug air gap at least once a year or
when the engine starts poorly. The correct gap be-
tween ignition ag and ignition contact is 0.25"/0.63
mm.
• Wait until the engine has cooled down completely.
• Pull the spark plug cap o󰀨 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 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 lter.
• 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 lter Fig. 32-35
Soiled air lters reduce the engine power by sup-
plying too little air to the carburetor. Dust and pollen
plug up the pores of the lter made of foamed plastic.
Regular checks are therefore essential.
• Unclip the air lter cover and remove the sponge
lter element.
• To avoid objects falling into the air tank, replace
the air lter cover.
• Wash the lter element in warm soap water, rinse
and allow drying naturally.
Important: Never clean the air lter with petrol or
inammable solvents.
In order not to shorten the service life of the engine,
a damaged air lter must be replaced at once.
m Warning!
Never run the engine without the air lter 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 onesided
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 rail
Servicing and sharpening of saw chain
The correct sharpened chain
Working e󰀨ectively with the chainsaw is only pos-
sible 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 at-
tempt 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 unsat-
isfactory results and higher wear.
• Clean the chain.
• Check it.
• Replace damaged or worn parts with matching
spare parts they are in the shape and size of the
original parts as necessary.
• Sharpening a chain should be performed only by
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 e󰀨ects and
resulting injuries!
• The chain cannot be xed on the guide rail. It is
therefore best to remove the chain from the rail
and then sharpen.
• Select the appropriate tools for the chain pitch
sharpening tool. See "Specications" for the al-
lowed chain pitches.
The chain pitch (for example 3/8 ") is highlighted in
the depth of each blade. Use only special les for
chain saws! Other les have the wrong shape and
the wrong cut. Select the le according to the diam-
eter of your chain pitch. Make sure to observe the
following angle when sharpening the chain diameter.
A = ling angle
B = the angle of the side plate
The angle must also be maintained for all knives.
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