14
716
1
Figure 17
1.
Wear indicator hole
Note: Replace the scraper whenever you replace the rotor
blades. This ensures proper snowthrower operation and
performance.
Removing the Old Blade
Note: You will need a No. 27 torx driver to complete this
procedure.
1. Remove the four torx screws and four locknuts that
secure the outer edges of the rotor blade to the rotor
shaft assembly (Fig. 18).
2. Remove the two hex-head capscrews, spacers, and
locknuts that secure the center of the blade to the steel
plates (Fig. 18).
3. Loosen the hex-head screw that secures the rotor
halves to the auger shaft assembly (Fig. 18).
4. Slide the blade out from between the rotor halves
(Fig. 18).
1
6
8
2
3
5
4
7
4
680
Figure 18
1.
Rotor blade
2.
Rotor half
3.
Torx screw
4.
Locknut
5.
Hex-head capscrew
6.
Spacer
7.
Auger shaft assembly
8.
Hex-head screw
Installing the New Blade
1. Examine the rotor blade edge for the difference in
layer thickness (Fig. 19). Some rotor blades have a
part number on the thick side of the blade.
1
2
681
3
Figure 19
1.
Thin side
2.
Thick side
3.
Wear indicator hole
Install both blades with the thick layer on the inside of
the curve. If you install one blade with the thick layer
on the outside of the curve and the other blade with the
thick layer on the inside of the curve, the blades will
be unbalanced and cause the snowthrower to “hop” or
“bounce.”
2. Insert the new blade between the rotor halves.
3. Secure the blade to the rotor halves with two hex-head
capscrews, two spacers, and two locknuts, positioning
the bolt heads on the thick side of the blade (Fig. 18).
