Gilson made tillers for a number of retailers - Montgomery Wards, Sears, Western Auto, and probably others. I have an owners manual for the Wards 1580-F Gilson tiller, which was equipped with a 5-hp engine. The tiller portion shown in your pictures looks similar, but the handle bars are a different design. If you had signed up to let GardenWeb forward e-mail messages to you, I could have sent you an electronic version of the MW owners manual - but ....

Hi Javert,

Thanks for the info. I had found out about MW but not Sears or WA.

I have changed my settings to allow e-mails. Just signed up yesterday and still learning. So if you check back on this thread and are still willing to send the owners manual, I would appreciate it.

I believe you have a Gilson 1572A. Correct engine is Briggs 100000 series 4hp. Never came with Craftsman/Tecumseh even when built for Sears. You also need two-groove pulley to operate reverse.