Service Manual

Single Stage Snowthrower Service Manual 7 - 5

MAINTENANCE

Installing The New Blade

The rotor blades are made of laminated rubber.

Examine the edge of a blade to see the differences in

the thickness of the layers. (Some blades have a part

number on the thick side of the blade.)

Both blades MUST be installed with the thicker layer

facing down. If this is not done, the blades will be

unbalanced, causing the snowthrower to hop or

bounce.

Press the spacer bushings into the holes in the new

blade.

Insert the new blade between the steel plates and

secure it with the original bolts and nuts. Position the

bolt heads on the thick (bottom) side of the blade

(Figure 172). We suggest starting with the center bolts

and move outward towards the ends. After all bolts are

installed, tighten all bolts.

Figure 172 0623-02

1992 And Newer Style

Beginning in 1992 the method of attaching the blades

changed slightly and a wear indicator hole also

became standard (Figure 173).

Figure 173 1854-16

When the paddle wears to this indicator, we

recommend replacing the blades.

The rotor blades are supported on both ends and in the

center only. Note: Completely remove and replace

one blade before starting on the other.

Many models require a Torx driver or ratchet to remove

some of the screws holding the paddles to the rotor.

These are typically used on the outer ends where snow

would build up on a conventional hex head bolt.

(A) Bolt

(B) Washer

(D) Locknut

(E) Thick Side

(F) Thin Side

(A) Wear Indicator