Arm Shaft; Axial Play - Husqvarna 6690 Manual

The arm shaft, axial play
The axial bearing should enable the shaft to run
freely during the whole turn and there should not
be any axial play.
Adjustment
Set the thread take-up lever at the lowest
position, remove the handwheel and then take
away the belt guard. Loosen the stop screws
7/5 on the belt wheel. Press the arm shaft with
one hand in the direction of the arrow and push
the belt wheel in the opposite direction. Then
tighten the stop screws, commencing with the
one which is touching the milled plate on the
arm shaft. Check that the arm shaft runs freely
during the whole turn and that there is no axial
play. Replace the belt guard and handwheel,
making sure that the thread take-up lever is at
the lowest position and the metal latch on the
handwheel points upwards.
The lower shaft, axial play
The axial bearing should enable the shaft to run
9/23 freely during the whole turn and there should
not be any axial play.
Adjustment
Remove the cover plate 5/13 on the underneath of
the base plate. Loosen the stop screws in the stop
ring. Then press the chain wheel in the direction of
the arrow and the stop ring in the opposite direction.
Tighten the stop screws.
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