Husqvarna DM 650 Workshop Manual page 5

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DISMANTLING BASIC MODULES
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Dividing basic modules
For repair work only involving the gear housing, such
as changing the spindle shaft, the machine is divided as
shown in the top image and as described below. The
division is made between the gear housing and the gear
box cover on the gear housing. Before the machine is
divided, it must be cleaned externally to avoid the risk
of dirt entering the gear housing. Drain the oil from the
gear housing.
For work on the motor unit, the machine is divided
in the manner shown in the image to the left and as
described on the following page.
Division – gear housing/gear box
cover
Dividing the gear housing is a particularly simple
operation.
1. Remove the two arrowed screws on the motor
housing. The screws above must remain in place.
2 x M5x49, 8 Nm
2. Remove the two arrowed screws on the front of the
motor housing. 2 x M5x20, 8 Nm
3. The gear housing can now be divided. There is a
break slot to help with the division. Use a screwdriver
and break alternately on both sides.
Always fit a new gasket when refitting the gear
housing.
4. Note:
The secondary shaft has a loosely fitting spacer ring and
brass washer which should be lifted off immediately
after the division to avoid the risk of them falling into
the gear housing when working with this.
If the washer is missing at the division, it is most
likely stuck to the gear box cover, or it has fallen into
the gear housing and must be removed.
NOTE: The brass washer must be replaced simul -
taneously with the change of oil after 300 hours.
(The spacer ring and washer stabilise the secondary
shaft axially.)
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