6.2
Spark plug
Before disconnecting the spark plug, clean around its
mounting.
Replace the spark plug once a year or every hundred hours of
use.
Spark plug: Champion RV 19 LM or equivalent.
Tightening torque: 24-27 Nm.
Electrode distance: 0.7-0.8 mm
6.3
Carburettor
The carburettor is factory set. If adjustment is required,
contact an authorised service station.
7 LUBRICATION
Before carrying out maintenance work, disconnect
the cable from the spark plug.
Lubricate the adjustment lever's gear and the discharge chute
before storing the snow thrower for the summer. Use a
clinging type of grease, e.g. Lubriplate.
8 SERVICE AND REPAIRS
8.1
Adjusting cable (SN 5022)
The auger drive lever's cable is adjusted at the factory. Any
adjustment is carried out as follows:
1. Unhook the cable at the auger drive lever (1:D).
2. Remove the casing and disconnect the cable from the
appropriate hole in the plate. See figure 10.
3. Reinstall the cable in the new hole as required. Replace
the casing, hook the cable onto the auger drive lever.
4. Start the snow thrower and check operation. The auger
should rotate when the auger drive lever is activated and
remain stationary when the auger drive lever is released.
If this is not the case, repeat the above procedure.
8.2
Belt cover (SN 5022)
1. Dismantle the belt cover (11:T) by removing the 7 screws
(11:U). 6 screws on the outside, one screw on the under-
neath.
Two of the screws on the outside also hold the left shoe.
2. Reassemble in reverse order.
8.3
Replacing the drive belt (SN 5022)
Replace the drive belt as follows:
1. Remove the belt cover. See above.
2. Remove the drive belt (12:Z) from the pulleys (12:W)
and (14:X). Take care not to damage the belt guide
(12:Y).
3. Install the new drive belt in reverse order.
4. Check that the drive belt (12:Z) is seated properly on the
wheels.
Attention! When the auger drive lever is activated, the play
between belt guide (12:Y) and drive belt (12:Z) must be 2
mm.
5. Fit the belt cover. See above.
ENGLISH
8.4
Replacing the auger's scraper rubber (SN
5022)
1. Lock the auger with a piece of wood (23:R).
2. Drill out the 24 rivets holding the outer scraper rubbers
(24:T). Use a 13 mm drill bit (23:S).
3. Remove the remains of the rivets and the scraper rubbers
using pliers or similar.
4. Remove the three screws (24:W) with nuts and washers
that hold the scraper rubbers (24:X) in the middle and re-
move the scraper rubbers.
5. Assemble new scraper rubbers in the reverse order. Use
24 screws with nuts instead of rivets.
8.5
Replacing the auger (SN 5022)
1. Remove belt cover and drive belt. See above.
2. Lock the auger with a piece of wood (13:A).
3. Dismantle the pulley (13:C) from the axle.
Attention! Left-handed thread
4. Undo the bearing assembly (13:B) from the left side of
the snow thrower and pull out the auger.
5. Reassemble in reverse order.
8.6
Adjusting cable (SN 421)
The auger drive lever's cable is adjusted at the factory. Any
adjustments are carried out as follows:
1. Loosen the screw (14:D) and move the spring (14:E)
backwards to tension the cable.
2. Tighten the screw (14:D) in the desired position.
8.7
Replacing the drive belt (SN 421)
Replace the drive belt as follows:
1. Dismantle the left belt cover by removing the 7 screws
(15:F).
2. Loosen the two pulleys (16:G).
3. Loosen the belt guide (17:H) on the underside.
4. Pry off the belt and install the new one in the same way.
5. Assemble the other parts in the reverse order.
8.8
Replacing auger and bearing (SN 421)
1. Dismantle the left belt cover by removing the 7 screws
(15:F).
2. Force the belt off the auger's pulley (18:J).
3. Hold the auger securely with a piece of wood or similar
and unscrew the pulley with a 26 mm socket. Note that
the thread on the pulley is left-handed.
4. Remove the screws (19:K) on the left-hand side of the
auger housing.
5. Dismantle the right cover by removing the 6 screws
(20:N).
6. Dismantle the discharge chute (20:H) by removing the
two screws (20:M).
7. Lift up the worm screw (21:Q)
8. Unscrew the auger housing's centre screws (20:P).
9. Pull the bearing off the left side of the auger using a
puller. See fig. 22.
10. Take out the auger.
11. Replace defect components and reinstall in reverse order.
Attention! Always install a washer or flange nut against
all plastic components.
Attention! Do not tighten the screw joints too hard. This
can damage the plastic components.
EN
41