Ariens Sno-Thro Professional Series Service Manual page 54

See Figure 114.
6. Reinstall pin into impeller shaft and turn shaft so pin is
horizontal.
7. Align thrust collar with pin and install thrust collar over
pin.
8. Move impeller shaft as far through gearcase rear as
possible.
Figure 114
9. Reinstall flange bushing onto impeller shaft end. With
a driver, strike bushing until positioned just below
retaining ring groove. See Figure 115.
10. Reinstall retaining ring. See Figure 116.
11. Turn impeller shaft by hand to ensure shaft rotates
easily.
EN – 52
Figure 115
Figure 116