Motor - Husqvarna DM 650 Workshop Manual

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MOTOR

Electric motor
The motor belongs to the new generation of electric
motors that work in conjunction with a high frequency
unit. The rotor has permanent magnets and therefore has
no carbon brushes. A typical feature is the high power to
weight ratio.
The motor has been designed by Husqvarna. A unique
feature is the advanced cooling system. This and the
motor function are described on the next page.
Note that servicing measures for the motor are not
described in this manual, as these cannot be carried out
in a normal workshop without complicated special equip-
ment and expert knowledge.
Dismantling
Remove hoses
Cut the hose clamps at the motor inlet and outlet connec-
tions for the cooling water. See description on Page 19.
Remove the cabling
Remove the two screws, (Allen key 3 mm) to the cable
support and remove the cable.
Remove the motor
The motor is secured to the gear box cover with four
screws. Remove these. 4 x M5x20, 4–6 Nm
Note that the upper left screw has a washer.
Pry up the motor to get the O-ring to release from the gear
box cover. Place a soft object against the gear box cover to
prevent damage to this, such as with a few cut tube stubs as
shown.
Fitting
Replace the O-ring
Always replace the O-ring if the motor is removed. Grease
the O-ring when fitting the motor to the gear box cover.