Maybe someone here can point you in the right direction as for me I seldom see a walk behind even in my shop nowadays.
Same here, Just not cost effective to repair them in most cases. The last Murray was probably 3 years ago, and it was one of the newer Murrays, that came back to a contact "parts at chinese company dot com" and we will see if we can assist you. No website, no parts diagrams, etc.
The Brute push mowers are serviced, warrantied and supported by Pulsar power products, And the last dealing I had with them ended in a email with a computer virus.