The Lock Nut is used to secure and lock parts in place. This is a gold, metal, individually sold part which can be installed with a wrench set, and socket set, and attaches onto various locations on a variety of equipment. If broken, damaged or worn, the part may be loose, and there may also be physical damage to the nut, at which time it...Read more should be replaced. Refer to your make, model and diagrams to ensure this is the correct part.
The lock washer goes next to the flat washer and is made of metal. It is available as an individual replacement part. This genuine item is supplied by the original equipment manufacturer for use with snowblowers made by Toro and Lawn Boy. A wrench might be helpful during the installation of this part. This item may become broken and will need to be replaced.