Alpina AN 622 SNOW THROWER [51/112] English

Alpina AN 622 SNOW THROWER [51/112] English
51
ENGLISH
EN
4. Check the distance between the belt guide and the belt.
The distance should be 3 mm. See fig 17.
5. If adjustment is required, loosen the screw to the belt
guide and set the correct distance.
6. Tighten the screw properly.
7. Reassemble the belt protection.
8. Reassemble the spark plug protection.
8.5 ADJUSTING THE CONTROL WIRES
When the belts are adjusted or replaced, the control wires
must also be adjusted (see below).
1. Unhook the wire from the clutch lever (fig. 23).
2. Push the clutch lever forward as much as possible (until
it touches the plastic protection on the handle).
3. Hold the wire stretched and note the position of the wire’s
Z-shaped end.
4. When the wire is correctly adjusted its end should be
situated in the middle of the hole in the clutch lever (fig.
23).
If adjustment is required:
5. Lift the snow thrower forward and rest in on the auger
housing.
6. Push the wire through the spring so that the threaded part
is exposed (fig 21).
7. Hold the threaded part and adjust the nut up or down until
the correct setting is obtained.
8. Pull the wire through the spring again. Hook the wire into
the upper part of the clutch lever.
9. Same adjustment for both sides.
10. Start the snow thrower and check that it does not rotate
when the clutch lever is up (= disengaged).If it does,
contact an authorised service station.
8.6 FRICTION WHEEL
If the snow thrower does not move forward the problem
could be the driving belt, driving control wire or friction
wheel. Check the friction wheel as follows.
8.6.1 CHECKING THE FRICTION WHEEL
1. Remove the spark plug protection.
2. Lift the snow thrower forward and rest in on the auger
housing.
3. Loosen the screws (3) and dismantle the bottom plate (2).
See fig 19.
3. Put the gear stick in bottom forward gear (one).
4. Measure the distance A between the friction wheel and
the outside of the side plate in fig. 24. The distance should
be 109.5 mm.
5. Adjustments are carried out as follows.
6. Reassemble in the reverse order.
8.6.2 ADJUSTING THE FRICTION WHEEL
Dismantle the parts and measure according to the
instructions in items 1-4 above.
1. Loosen the screws and set the friction wheel until the
measurement in item 4 above is obtained.
2. If the friction wheel is so worn that adjustments cannot be
carried out satisfactorily, replace in accordance with the
following instructions.
3. Otherwise reassemble in the reverse order after adjusting.
8.6.3 REPLACING THE FRICTION WHEEL
1. Dismantle the right wheel from the shaft.
2. Loosen the screws (3) and dismantle the bottom plate (2).
See fig 19.
3. Remove the screw holding the chain sprocket (12) and
pull out the shaft (11) and remove the chain sprocket (12).
See fig 25.
4. Dismantle the two bearing mountings (16 in fig 20).
5. Dismantle the shaft and bearing mountings. Note the
location of the two washers (17 in fig 26).
6. Replace the friction wheel on its hub (fig 27).
7. Reassemble all the parts in the reverse order. Note the
following when reassembling:
- Check that the washers (17 in fig 26) are correctly
placed.
- Check that the washers (13 in fig 26) are correctly
placed.
- Check that the shaft (8 in fig 26) rotates freely.
- Check that the friction wheel and disc drive plate are
totally free from oil and grease.
8.7 REPLACING THE SHEAR BOLTS
The auger is fastened to the shaft by special bolts (20 in fig.
13) that are designed to break if something gets stuck in the
auger housing.
Always use genuine spare parts. Other types of
bolts could cause serious damage to the machine.
1. Stop the engine.
2. - Disconnect the starting cable from the spark plug.
3. Ensure all the rotating parts have stopped.
4. Remove the object that has fastened in the auger.
5. Lubricate the auger shaft (see above).
6. Assemble the new genuine bolt (N). Do not forget the
distance (P). See fig 32.
9 STORAGE
Never store the snow thrower with petrol in the
tank in a confined area with bad ventilation. Petrol
fumes could reach open flames, sparks, cigarettes
etc.
If the snow thrower is to be stored for a longer period than 30
days, the following measures are recommended:
1. Empty the petrol tank.
2. Start the engine and let it run until it stops due to lack of
fuel.
Empty the petrol tank outdoors when the engine is
cold. Do not smoke. Empty into a container
designed for petrol.
3. Change the engine oil if it has not been done for 3
months.
4. Remove the spark plug and empty a little engine oil
(about 30ml) in the hole. Crank the engine a couple of
times. Screw back the spark plug.

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