If service is required, be prepared to supply the service person with the Model and Serial Number of the Sno-Thro, as well as a full description of the problem encountered. NOTE: The descriptions and specifications contained in this manual were in effect at the time the manual was approved for printing. Ariens Company reserves the right to discontinue models without notice and without incurring obligation. The Sno-Thro described within this manual may not be identified as either standard or opt