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English – 35
1. Remove the sprocket (1) by undoing the two
setscrews (when removing one side’s
freewheeling tine assembly).
2. Remove the bearing (2) on the outside of the
freewheeling tine assembly from the rotor and
undo the locking collar (3) inside the inner
bearing. To free the locking collar, you must first
remove the setscrew and then insert a punch
into the hole beside the setscrew and tap it with
a hammer so that the locking collar turns
opposite the normal rotation direction.
3. Remove the freewheeling tine assembly (4).
4. Place the new rotor assembly beside the old
assembly so you can see which direction the
new tines are to be fit. You can also refer to the
tines on the fixed-tine assembly as an example
of proper assembly.
Replacing the freewheeling tine assembly
MAINTENANCE
5. The inner bearing shall be installed with the
bearing hub facing the fixed tines. Make sure
that the inner bearing has a locking collar.
6. Once the new tines have been installed on the
rotor, you should mount the new freewheeling
tine assembly and the outer bearing. The
bearing hub should face the fixed tines. The
bearing with the locking collar faces the fixed
tines and butts up against the shoulder of the
shaft. Tighten the bearing nuts by hand.
7. Tighten the four bearing nuts properly.
8. Lock the bearing collar with a hammer and
punch. Make sure that the collar locks in the
same direction as the rotation of the rotor.
9. Refit the outer shaft bearing and the rotor
assembly per instructions in steps 1 through 10
in the section ”Replacing the tine shaft bearings”
(but in reverse order).
Model AR19 has one freewheeling tine assembly at each side but model AR25 has two. The illustration above
shows model AR25.
Perform steps 1 through 10 in the previous section ”Replacing the tine shaft bearings” and then the following:
Tine wear
After your Husqvarna lawn aerator has been used for
some time, the tines will become worn out. When this
happens, their aeration performance will diminish.
Check the tines using the drawing and replace them
before they are worn beyond their minimum length.
New tines are 12.7 cm long.
8011-171
8011-155