Identify this snow thrower
 

I picked this old snow thrower up today for my 1882. It mounts where the mule drive mounts and is 44" wide. It has a very short belt that U's down from the snow thrower drive under 2 giant pulleys and up to the tractors pto. I need to see how the tension spring needs to be installed. I cannot find any identification label or tag.

looks like a 551

I believe the 551 mounting and belt tensioning is the same as the 451 if you cannot find a 551 manual.

I do believe you guys nailed it! Thank you!

The gearboxes are a bit of wear item and no parts to fix- I would suggest teardown and new grease in both.