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Join Date: Jan 2007
Re: case 446 identification numbers please
Your mention of foil makes me think you are looking at the engine tag rather than the tractor. The tractor tag should be on the vertical surface below the steering wheel near the bottom of the tower. Probably stamped 446-xx where xx is the year made. All 446 had 16 hp Onan engines originally, but after all the years it may have been swapped. 16/ 18/ 20 are common.
The 170- is an Onan part number. If the foil tag is on the engine, that may indicate a later swap.