Vintage Horticultural and Garden Machinery Club

Thanks for the extra details.

If any members want to correct the following information, then please do so! Info is a bit scarce and hard to search for.

Indeed, the USA company Troy-Bilt uses the Bronco model name – although, as far as I can tell, there’s no connection between them and your machine. It really muddled things when I were doing searches! (as did searches bringing up the Ford Bronco).

Bronco was a make of two-wheel models in Spain, but I cannot find any dates when they were active. The company is reported to have had an address on Valencia street, Villareal, Castello.

There are some models relating to Bronco. These seem to include models from 2 – 10 hp (perhaps more), with the model numbers E, G, H, JS200, JS250 (Villiers-powered), JS325, JS450, JS150, and JS250 (2-stroke). I’m assuming that there is a mixture of petrol and diesel models in there. There might be additional models.

So the castings on your machine say it is a Bronco JS450, with a diesel engine. I have no idea of Lombardini engines, but I’ve looked at images on Google and from purely visual match it could be an Italian-made Lombardini LDA450 engine. In an ideal world it would be good if the engine ID plate had not faded.

The Bronco JS450 is stated as having three forward gears and one reverse. Tyres shown as 6.00×12.

Does any of this info tally with your machine?

Do any members have knowledge of Lombardini engines?