Scheppach 59081039974 Originalbetriebsanleitung Seite 37

4. Carefully turn the snowblower up and forward so
that it stands on the feed screw housing.
5. Remove the frame cover from the underside of
the snowblower by removing the screws which
hold the cover.
6. Slide the drive belt from the roller and between
the friction wheel and friction wheel disc.
7. Remove the belt and put the new one back on by
proceeding in reverse order.
Holding the drive clutch lever down makes it easier to
reinstall the belt.
If an assistant is available, you can also disconnect
the feed screw housing from the frame unit in order to
replace the belt.
1. Switch the engine off, remove the key, disconnect
the ignition cable and allow the unit to fully cool
down.
2. Remove the belt cover.
3. Remove the shaft gear cover and pull the shaft
blocking cable, the baffle cable and the ejection
shaft control rod.
4. Remove the cover downwards in order to avoid
bending when tipping the unit.
5. Remove the screws that attach the feed screw
housing to the frame (two on each side). Tip the
feed screw housing and frame so that they sep-
arate.
6. Replace the feed screw belt or the drive belt.
7. Tip the feed screw housing and frame so that they
fold together and secure them with the bolts.
Holding the feed screw clutch lever down makes it
easier to connect the feed screw housing and frame.
8. Place the belt(s) on the engine roller(s).
9. Refit the shaft blocking cable, the baffle cable and
the ejection shaft control rod.
10. Refit the shaft gear cover.
Friction wheel replacement (Fig. 26 - 30)
If the snowblower does not move forward although
the drive clutch is engaged and adjusting the clutch
control cable does not remedy the problem, the fric-
tion wheel may need to be replaced.
1. Remove the ball bearing from the left side of the
frame by removing the hexagonal bolt and the
washer (Fig. 26)
2. Carefully remove the hexagonal nut securing the
hexagonal shaft to the frame of the snowblower
and lightly tap the end of the shaft to loosen the
ball bearing from the left side of the frame (Fig.
26 detail picture). Be careful not to damage the
threads on the shaft.
3. Then remove the bearing from the right side of the
frame by removing the spring washer. (Fig. 27)
4. Carefully move the hexagonal shaft down and to
the right. Then remove the snap ring before care-
fully sliding the friction wheel unit off the shaft.
(Fig. 28)
5. Pull the hexagonal shaft off the friction wheel unit
to the left and remove the shaft and friction wheel
unit. (Fig. 29 + 30)
6. Follow the steps above in reverse order in order to
reassemble the unit.
Replacement of the rubber ring
1. Remove the eight screws holding the side parts of
the friction wheel together.
2. Remove the rubber ring between the side parts.
3. Reassemble the side parts with a new rubber ring.
m When you reassemble the friction wheel unit,
make sure that the rubber ring is in the centre and
properly seated between the side parts. Tighten
each screw only one turn before turning the wheel
clockwise and continuing with the next screw on
the other side of the wheel. Repeat this process
several times to ensure that the parts are secured
with equal force between 90 Nm and 130 Nm.
4. Slide the friction wheel unit back onto the hexag-
onal shaft. Ensure that the shift lever pin is in the
correct position in the bearing housing. Follow the
steps above in reverse order in order to reassem-
ble the components.
Feed screw clutch and drive clutch (Fig. 16)
If the clutch lever of the feed screw or drive clutch are
disengaged and in the disengaged position, the cable
should have very little slack. It should be taut.
The feed screw must stop within 5 seconds when the
clutch lever of the feed screw is disengaged. If the
feed screw clutch cannot not activated or deactivated
properly, adjust the feed screw clutch before operat-
ing.
If the snowblower drive periodically deactivates or
moves during operation when the drive clutch lever
disengages, adjust the drive clutch before operation.
Both the feed screw clutch and the drive clutch can be
adjusted at both ends of their control cable.
1. Loosen the adjusting nuts (f) on the Bowden cable
holder (g).
2. Slide the control cable up or down by screwing
the adjusting nut in order to increase the cable
tension or provide more slack.
3. Screw the adjusting nut (h) to slide the cable down
or up so that the cable tension increases or pro-
vides more slack.
4. Tighten the nuts after the corresponding adjust-
ments have been carried out.
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