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Husqvarna K7000 Workshop Manual page 17

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Water valve
The motor requires water cooling so as not to overheat. The water
is fed from the water valve to the motor's cooling ducts, and nor-
mally on to the spray nozzles on the blade guard. If dry cutting is
necessary, the flow is rerouted, and the water is fed to the hose
beneath the rear handle once it was cooled the motor. The hose has
a Gardena coupling for a further hose connection and the water is
fed out to an appropriate drain.
The water valve has two functions:
The water flow to the blade is set using the blue knob (1), removed
in the upper photo. The valve is closed during dry cutting.
The adjustment control (2) is located on the opposite side and has
two positions:
— The water is fed to the blade guard after cooling the motor.
— The water is fed to the hose beneath the rear handle after
cooling the motor.
Testing in the workshop
Water does not need to be connected for motor cooling for short-
term testing with the motor without load.
A. To the blade guard's spray nozzles.
B. To the motor's cooling water outlet side.
C. To an outlet pipe (during dry cutting) at the rear handle.
D. Screw which secured the valve unit to the guard.
(M5x14, 3–4 Nm)
Remove the hoses at A and B. Undo the screw D, and then the
valve unit can be lifted off.
The water valve is available as a complete spare part. It does not
normally require any service actions.
Valves may sometimes jam, especially if they have not been used
for any length of time. Valves which jam can often be made to
work by cleaning and lightly greasing the sliding surfaces.
The adjacent photos show removed valves.
Adjustment control
The control is removed using the centre screw, Torx 10.
(PW3, 5x9.5 T10, 3–4 Nm)

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