Park the machine on a level surface and remove the spark plug wire to make sure the machine cannot accidentally start.
Identify the right and left skid shoes on the bottom side of the snow collection area of the snowblower. Detach the nuts and bolts that hold both skid shoes in place.
Locate the snow wear blade, or shave plate, on the bottom of the snow auger. Loosen the nuts and bolts near the auger that connect the blade to the machine.
Install the new blade in the reverse order from which the old one was detached. Attach the skid shoes in the reverse order from which they were removed.
Securely tighten the nuts and bolts to ensure proper operation. Reattach the spark plug wire.