Scheppach CSP50 Instruction Manual page 39

Note
A new saw chain (17) stretches and needs to be re-
tensioned more often. Check and adjust the chain
tension regularly after each cut.
Depending on wear, the guide bar (16) can be turned.
• Set the chainsaw down on a level and stable sur-
face.
• Pull the front hand guard (1) back as far as it will go
to release the chain brake (see fig. D).
• Remove the two fixing nuts (20) with the spark plug
wrench / slotted screwdriver (28).
• Remove the chain cover (22).
• Slide the slotted hole of the guide bar (16) over the
two protruding pins.
• Place the saw chain (17) over the teeth of the chain
wheel (26). Insert the saw chain (17) accurately in
the direction indicated on the guide bar (16). In the
tip of the guide bar (16) there is a guide wheel into
whose teeth the saw chain (17) must be inserted.
• Pull slightly on the guide bar (16) to slightly pre-ten-
sion the saw chain (17).
• Fit the chain cover (22) back on. Make sure that the
internal chain tensioning pin (23) fits into the match-
ing hole (25) in the guide bar (16). If necessary, ad-
just the chain tensioning screw (21) with the spark
plug wrench / slotted screwdriver (28).
• Screw on the two fastening nuts (20) by hand. How-
ever, make sure that you do not tighten them yet.
• Use the spark plug wrench / slotted screwdriver
(28) to turn the chain tensioning screw (21) clock-
wise until the lower part of the saw chain (17) slides
into the guide bar (16). The saw chain (17) must be
in contact with the underside of the bar. When the
chain brake is released, it must be possible to pull
the saw chain (17) over the guide bar (16) by hand.
Note
A new saw chain (17) stretches and needs to be re-
tensioned more often.
• Tighten the two fixing nuts (20) with the spark plug
wrench / slotted screwdriver (28).
13.9 Sharpening and maintaining the saw chain
m WARNING
Risk of injury!
Always wear protective gloves when touching the
saw chain (17). Danger of injury due to the sharp cut-
ting teeth!
The properly sharpened saw chain (17)
A properly sharpened saw chain (17) goes effortless-
ly through the wood and requires very little pressure.
Do not work with a dull or damaged saw chain (17). It
increases physical exertion, magnifies the vibrations
and leads to unsatisfactory results as well as greater
wear and tear.
• Clean the saw chain (17) regularly.
• Check the saw chain (17) for breaks in the links and
damaged rivets.
• Sharpening a saw chain (17) should only be carried
out by experienced users!
• Note the angles and dimensions specified below.
If the saw chain (17) is not properly sharpened or
the depth gauge is too small, there is a higher risk
of kickback effects and the resulting injuries! The
saw chain (17) cannot be fixed on the guide bar. It
is therefore best to remove the saw chain (17) from
the guide bar and then sharpen it.
• Select a sharpening tool that is suitable for the
chain pitch.
The chain pitch (e.g. 3/16") is marked in the depth
gauge of each cutting link.
Only use files specifically for saw chains!
Other files have the wrong shape and the wrong
edge. Select the diameter of the file according to your
chain pitch. Be sure to also note the following angles
when sharpening the cutting links.
A = file angle
B = angle of the side plate
Furthermore, the angle must be maintained for all cut-
ting links.
If the angles are uneven, the saw chain (17) will run
erratically, wear out quickly and break prematurely.
Since these requirements can only be met with suffi-
cient and regular practice:
• Use a file holder.
• A file holder must be used when sharpening the
saw chain (17) by hand. The correct filing angles
are marked on it.
1. Hold the file horizontally (at the correct angle
to the guide bar) and file according to the angle
marking on the file holder. Support the file holder
on the top plate and the depth limiter.
2. Always file the cutting link from the inside out.
3. The file only sharpens as it moves forward. Lift
the file off as you move backwards.
4. Do not touch the drive links or fastening links with
the file.
5. Turn the file regularly to avoid wear on one side.
6. Use a piece of hard wood to remove the burr from
cutting edges.
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