Changing The Gearbox Oil; Replacing The Carbon Brushes; Daily Maintenance - Husqvarna DM 230 Manual De Instrucciones

Changing the gearbox oil

Contact your dealer to get the right oil.
The oil in the gearbox must be changed after every 400
hours of operation. Do as follows:
1 Get:
- New oil, Mobile Lube1 SHC 75W90 or other similar
transmission oil.
- A container for the old oil.
2 Secure the machine with drill spindle downwards in a
vice or the like.
3 Unscrew the six screws holding the motor - gearbox
modules together.
4 Carefully disassemble the machine.
5 Empty the gearbox oil into the container.
6 If necessary contact your dealer to clean the gearbox.
7 Pour the new oil into the gearbox, about 0.25 litres.
8 Fit a new O-ring between the motor cover and the
gearbox cover. Contact your dealer to receive the
correct O-ring.
9 Reassemble the machine and screw in the six screws.

Replacing the carbon brushes

The carbon brushes must be removed and checked
regularly. Weekly if the machine is used daily or at longer
intervals if the machine is used more seldom. The area of
wear should be even and undamaged.
Both carbon brushes must always be replaced as a pair,
but one at a time. Do as follows:
14 – English
MAINTENANCE
1 Remove the inspection cover's screws, 3.
2 Lift the carbon brush holder spring to one side.
3 Loosen the screw.
4 Pull out the carbon brush connector.
5 Pull the carbon brush out from the holder.
6 Clean the brush holder with compressed air or a
brush. Replace the brush if worn.
7 Fit the new carbon brushes and, at the same time,
check that they slide easily in the brush retainers.
8 Put the brush holder spring back into place.
9 Insert the carbon brush connection under the screw.
10 Repeat the procedure with the other carbon brush.
11 Refit the inspection cover screws, 3. Press together
the rear section to make it easier to secure the screws.
Make sure that the inspection cover enters its slots.
12 Let the machine idle for 10 minutes to run in the new
carbon brushes.

Daily Maintenance

1 Check that nuts and screws are tight.
2 Check that the power switch unit works smoothly.
3 Check the ground fault circuit interrupter.
4 Clean the outside of the machine.
5 Check and clean the cooling air openings.
6 Check that the cord and extension cord are intact and
in good condition.