Scheppach PCS38 Originalbetriebsanleitung Seite 49

m NOTICE
The saw chain may droop slightly on the lower part of bar.
This is normal.
• Pull the chain bar forward until the chain is closely
seated. Make sure that all the drive links are in the
groove of the bar.
• Align the chain bar such that the TANG fits into the
hole in the chain bar shown in figure 7.
• Align the Chain brake lever / front hand guard such
that the Tang fits into the hole in the machine-case
as shown in figure 6.
• Fit the Chain brake lever / front hand guard and
turn the bar fastening knob & lever (Fig. 9/pos. 18)
clockwise to secure it. The chain is not allowed to
slip off the guide bar when you do this. Only loose-
ly tighten the bar fastening knob & lever at this
stage and then follow the instructions for adjust-
ing the chain tension as described in the section
ADJUSTING THE CHAIN TENSION.
2. IF THE CHAIN HAS TO BE RE-TENSIONED
Adjusting the chain tension
Correct saw chain tension is extremely important and
must be checked before starting operation and at reg-
ular intervals during all sawing work. If you take the
time to adjust the saw chain, you will improve your
sawing results and extend the chain's service life.
• Loosen the bar fastening wheel (fig. 9 / item 18) by
turning 1/2 a turn ANTICLOCKWISE.
• Keep the bar's tip pointing upwards and turn the
chain tensioning wheel (fig. 9 / item 3) CLOCK-
WISE to increase the chain's tension. If you turn
the chain tensioning wheel ANTICLOCKWISE, the
chain tension is reduced. Ensure that the chain is
tight around the bar (fig. 4 / item X3).
• After making the adjustments, tighten the chain
tensioning wheel while the bar's tip is pointing up-
wards (fig. 9 / item 18). The chain is tensioned cor-
rectly if it is tight and can be pulled around the bar
when the chain brake (5) is released.
m WARNING
Always wear high strength gloves when handling the
saw chain or adjusting it.
m If the chain can moves around the bar with difficul-
ty or is blocked, it is tensioned too tightly. Perform the
following fine adjustments:
A Loosen the bar fastening wheel (fig. 9 / item 18) by
turning 1/2 a turn ANTICLOCKWISE. Then reduce
the chain tension by turning the chain tensioning
wheel slowly (fig. 9 / item 3) ANTICLOCKWISE
and then pull the chain forwards and backwards
on the bar (fig. 30). Continue this procedure until
the chain can move freely but is still tight (fig. 4 /
item X2). Increase the chain tension by turning the
chain tensioning wheel CLOCKWISE.
B When the saw chain tension is adjusted correct-
ly, hold the bar with the tip pointing upwards and
tighten the bar fastening wheel (fig. 9 / item 18).
m A new saw chain stretches so that it has to be
re-adjusted after around 5 sawing procedures. This
is normal for new saw chains and the interval for fu-
ture adjustments increases after a short time.
m If the saw chain is tensioned TOO LOOSE or TOO
TIGHT, the drive wheel, the bar, the chain and the
crankshaft bearing wear out quicker. Fig. 4 / item X2
shows the correct tension (when cold) and fig. 4 /
item X3 shows the tension (when cold). Fig. 4 / item
X1 shows a chain that is too loose.
3. MECHANICAL TEST OF THE CHAIN BRAKE
Your chainsaw is equipped with a chain brake that
reduces the risk of injury due to a kickback. The
brake is activated if pressure is exerted on the brake
lever as soon as the operator's hand hits the lever,
e.g. during a kickback. If the brake is activated, the
chain stops abruptly.
m WARNING
The chain brake does reduce the risk of injury in the
event of a kickback but cannot provide the intend-
ed protection if the saw is used carelessly. Always
check the chain brake before using your saw and
check regularly when working. (For details on per-
forming a test on the mechanical brake, see below).
4. TESTING THE CHAIN BRAKE
• The chain brake is RELEASED (the chain can
move) when the BRAKE LEVER (5) IS PULLED
BACKWARDS (fig. 11 / item 2) AND APPLIED as
shown in fig. 11.
• The chain brake is APPLIED (the chain is locked)
when the brake lever (5) is pulled forwards and vis-
ible in the mechanism (shown in fig. 10). The chain
should then not be able to move (fig. 30).
m WARNING
The brake lever should engage in both positions. If
you feel a strong resistance or the lever cannot be
moved, do not use your saw. Take it to a professional
service centre for repair immediately.
5. FUEL AND OIL - RECOMMENDED FUELS
For optimal results, use normal unleaded fuel blend-
ed with special 2-stroke oil. Prepare the mixture as
specified in the fuel mixing table.
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