djogon wrote:
....
I got a snowblower (and) ... I also wanted to find the manual for it
... (but) there is not a single brand name on it. The only thing
I can find is a plate with model number and serial number engraved into
it.

It says that the model number is 6709

It is red (as most of them are). ...

Well, Deere are green for at least one other data point...

I think it is either Ariens, Toro or Craftsman

I'm quite sure if it were any of the "name" brands (even including
Craftsman) it would have a brand ID on it so I'd not suspect any of
those as being likely unless it is ancient and/or been repainted that
has covered up manufacturer id.

Best I recall, Ariens is orange, Craftsman can be almost anything.

....

Anyone with a red snowblower - please, please take a look at the model
number and let me know if you have a 6709 on it. It would help me a
lot.

I'm guessing if it's such a no-name there won't be anybody claiming it
proudly on the web anyway, but guess you'll not know unless you ask...

What about engine manufacturer/model/SN? That could be at least a clue
as to who/what it _isn't_ ...