Vintage Horticultural and Garden Machinery Club

Change the oil regularly, service the air filter regularly and keep the underside of the deck clean. Stay away from the hose pipe or pressure washer. Store the machine in the dry.
Deck rot is your worst enemy. Scrape out all the wet grass and gunge – particularly at the end of the season.

As far as I know the Westwoods were manufactured through the 1980’s and were made at their factory in Plympton, Devon. Ransomes acquired Westwood tractors in 1989.

I’ll scan and attach the back page of one of the brochures which shows the factory and manufacturing line.

I believe that Westwood manufactured tractors date from a bit earlier than has been suggested as we were servicing quite well used ones in 1981. I use the word manufactured as it is my understanding that the very early ones were American Dynamarks badged Westwood. Maybe someone can enlarge on that.
Westwoods used to have specification labels – in various places – but they were of adhesive foil construction and many will have disappeared. If you machine has an original Briggs and Stratton engine it will have the words Model, Type and Code stamped into the engine cowling – possibly just above the spark plug. The code number will reveal the year, month and day of manufacture. If it starts with 82, that is 1982.

That makes sense. I think that the Westwood badged Dynamarks had the pressed steel decks as per your images and the first Plymouth built machines had the fabricated decks; the 28” one being known as the the-penny-bit deck.
Now I wonder why ?!