Headlamp Bulb - Stiga 966 D Instructions For Use Manual

EN
7.10 HYDROSTAT (1171 HST, 1381 HST)
7.10.1 Description
See fig. 32.
The hydrostatic power-transmission transfers the power from
the motor to the driving wheels with stepless ratio forwards
as well as backwards.
The unit consists of a hydraulic pump and a hydraulic motor.
The hydraulic pump can be set with an angle positioned disc
to pump different amount of oil.
A big angle of the disc gives a big stroke to the peripheral
located pistons and such a big oil flow.
A small angle gives a small stroke and such a small oil flow.
By angeling the disc over to the other side, the oil will flow
in the opposite direction and the machine moves backwards.
The oil flow is then conducted to a hydraulic motor. The
hydrauic motor has a fixed angle positioned disc to which the
peripheral located pistons push. This makes the unit, where
the pistons are located, to rotate.
7.10.2 0Troubleshooting
See fig. 33-35.
At malfunction in the hydrostat, in first-hand check the
following:
1. The by-pass valve shall be in closed position. I.e. the
lever (K) in fig. 35 shall be in its forward position in the
machines´ direction of travel.
2. The speed lever (J) shall be able to move between its end
positions when actuating the handlebar speed lever. Ev.
adjustments is performed at the link (7) in fig. 7.
3. Check that the driving belt is intact. See 7.6.
4. Check the oil level. See below.
7.10.3 Replacing the hydrostat
See fig. 33-35.
The hydrostat, (B) in fig. 33, can be replaced according to the
instructions below:
1. Remove the ignition key.
2. Disassemble the belt cover (1) by loosening the screws
(2). See fig. 16.
3. Arrange the machine on its auger.
4. Disassemble the wheels by removing the wheel lockings.
See (2) in fig 8.
5. Disassemble the bottom plate (2) by loosing the four
screws (3). See fig. 15.
6. Loosen the speed lever lower attachment (4) in fig. 7.
7. Disassemble the screw (A) with its nut and pull out the
wheel axle (D) to the left.
8. Loosen the screw (G) and rotate the wire attachment (E)
forwards. After that, disassemble the screw (F) holding
the front part of the hydrostat.
9. Hold the hydrostat and disassemble the screw (C). After
that, remove the hydrostat from the machine.
10. Assemble the hydrostat in the reverse order.
Note! Check that the ventilating hose remain intact during
the assembling procedure and is located on its nipple also
after the assembly.
Note! Check that the by-pass lever (K) in fig. 35 is closed
(position C) after the assembling procedure. I.e. in its
forward position in the machines´ direction of travel.
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ENGLISH
7.10.4 Checking the oil level in the hydrostat
See fig. 35.
1. Set up the hydrostat in a vise and remove the oil plug (H).
2. Check the oil level. The level shall be 25 mm under the
upper part of the hole at the temperature 10-38°C. Top up
as required.
Type of oil: Motor oil 5W-30.
3. Reassemble the oil plug and bleed the hydrostat
according to the instructions below.
7.10.5 Bleeding the hydrostat
1. Lock the by-pass valve in open position using a steel wire
or similar.
2. Fit a drilling machine with a suitable screw bit to the
pulley mounting screw.
3. Start carefully the drilling machine so the pulley rotates.
During this procedure, move the speed lever (J) 5 times
reciprocating between its end positions.
4. Run the drilling machine in the opposite direction so the
pulley rotates. During this procedure, move the speed
lever (J) 5 times reciprocating between its end positions.
5. Lock the by-pass valve in closed position and repeat steps
2-4 above.
6. Check the oil level again. Top up as required. If oil has to
be added, the bleeding in steps 1-5 must be repeated.
Note! The driving shaft rotates about twice as fast forwards
as backwards when driving with the drilling machine.
7.11 REPLACING THE SHEAR BOLTS
(R IN FIG. 12)
The auger is fastened to the shaft by special bolts 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 ignition 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. Aligne the holes in the shaft and auger.
7. Remove the broken bolt parts.
8. Assemble a new original shear bolt.

7.12 HEADLAMP BULB

Only 27 W original spare part bulb is allowed to be
used. Bulbs with higher power will damage the
headlamp.
The headlamp bulb is fitted to the headlamp by a bayonet
socket. See fig. 17. To replace the bulb proceed as follows:
1. Turn the bulb about 30° CCW and pull it out.
2. Release the plastic locks at each side of the bulb and pull
off the cable connection from the bulb.
3. Fit the new bulb in the reverse order.