Husqvarna AR19 - Manual (Page 34)

32 – English
MAINTENANCE
Wheels
Replacing the drive wheel axle
1. Turn off the engine and empty all fuel from the
fuel tank.
2. Remove the weights and the drive guard cover.
3. Remove the locking nut (2) on the idler
adjustment screw (1) to slacken the chain.
Remove the master link and the chain.
4. Tip the lawn aerator backwards so that it is
resting on the handle. The front wheel ends up
about 30 cm above the ground.
5. Remove the nuts (1) and screws (2) (4 of each
on model AR19 and 6 on model AR 25) for the
wheel axle bearings.
6. Remove the wheel axle with wheels and
sprocket. Model AR19 does not have the
complete bearing closest to the sprocket; the
illustration shows model AR25.
7. Undo 2 setscrews (hex screws) for the sprocket
(5) and pull the sprocket and the bearings from
the axle. To remove the bearings (3), you must
first remove the locking collar (4). Undo the
setscrew, insert a punch into the hole beside
the setscrew and tap it with a hammer so that
the locking collar turns opposite the wheel’s
normal rotation direction. If the bearings have
rusted in place, they must be replaced together
with the wheels and axle.
8. Fit the bearings and sprocket loosely on the
axle. For model AR19, the hub side of the
bearing should be turned away from the wheel.
Model AR25 has three bearings. On both of the
bearings closest to the wheel, the hub should
be turned away from the wheel. On the bearing
closest to the sprocket, the hub should be
turned away from the sprocket.
9. Tighten the bearings in place.
10. Center the wheel in the wheel opening in the
cowling (see illustration). Set the locking collars
by tightening the setscrews.
11. Align the sprocket with the other sprockets and
tighten both of the setscrews (hex screws) for
the sprocket. Use blue Loctite when the key is
in place.
12. To fit the chain, follow instructions in chapter
”Maintenance/Replacing the chain”.
13. Adjust the chain (see chapter ”Maintenance/
Adjusting chain tension”) and refit the drive
guard cover.
8011-170
8011-175
8011-219
WARNING!
Secure the handle so that the lawn
aerator cannot tip over.