Filter
Top Products
18
Drive Wheel Shaft Removal and Replacement (Continued)
7. Pull sprocket and bearing from shaft. NOTE: Sprocket is double set screwed. To remove the
bearings, you must first remove the collar by loosening the set screw, then insert pin punch into
the hole next to the set screw and, using a hammer, with moderate striking, hit collar so that it
rotates in the opposite direction the wheel would normally turn. If bearings are rusted in place they
will have to be replaced along with the wheel and shaft.
8. Install bearings and sprocket loosely onto the shaft. Model AR19: hub side away from wheels.
Model AR25 has 3 bearings. Wheel bearings should have hubs facing away from wheel. Wheel
shaft bearing should have hub facing away from sprocket.
9. Bolt bearings into place.
10. Center the wheels between the wheel opening and the housing. Lock the collars in place and
tighten set screws.
11. Align and tighten the sprocket (there are double set screws stacked two in each hole) use blue
loctite with the key in place.
12. Replace the chain following procedures in section “Chain Removal and Replacement.(see
page 16).
13. Adjust chain per section “Adjusting Chain Tension” and replace drive guard. (see page 17).
Rear Wheel Removal and Replacement: Model AR19
1. Make sure unit is on level ground and engine is turned off.
2. Lower the rear wheel control handle to let the aerator rest on the tines.
3. Turn the rear wheel depth/stability control knob to adjust the rear wheels for minimum depth
clockwise (more stability).
4. Remove the axle nut. Pull the axle bolt, then the wheel from the wheel carriage.
5. Install a new wheel with grease fitting facing out, with seals carefully in place on the wheel
bushing.Insert axle bolt through wheel and wheel lift frame. Use washer and lock nut, tighten
firmly.
6. Grease wheel bearings.
Rear Wheel Removal and Replacement: Model AR25
1. Make sure unit is on level ground and the engine is shut off.
2. Lower the rear wheel control handle to let the aerator rest on the tines.
3. Turn the rear wheel depth/stability control knob to adjust the rear wheels for minimum depth
clockwise for more stability.
4. Remove the hairpin cotter pin. (see Figure 18)
5. Slide the wheel assembly off the machine. (see Figure 18)
6. Install hairpin cotter pin into the axle when removed to prevent loss.
Removable Wheel - Model AR25 Only
Figure 18
Maintenance and Service Instructions