Peerless transmissions, a Tecumseh company from 1964 to 2009, are now manufactured by Husqvarana. The Peerless transmission brand of lawnmower transmission is used on both push and riding mowers. Through the years, many Peerless transmission models have been manufactured; which model is present depends on the mower application. Identification is accomplished by locating the identification tag to find the model and serial numbers, as well as the date of manufacture. Early 1960s transmissions are not identified by model number, so recording the serial number and contacting a Tecumseh parts department will be necessary to identify the Peerless transmission in question.
Find the Identification tag or stamp on the transmission. The Tecumseh Technician's Handbook has an illustration showing each of the different Peerless transmissions with the Identification stamping or tag location on each unit. The Peerless corporate name is normally found on the transmission tag itself.
Identify the different codes. On each tag, or stamped in to the transmission housing, Peerless gives the date of manufacture, the unit's individual serial number and the model/warranty number (except on early models). The model number is on the top line and is usually labelled as the model number.
Decode the date of manufacture. Peerless uses the Julian system, which identifies the day of the year the transmission was manufactured, beginning with "001" for January first. "275" would be the 275th day of the year. The the last digit of the year is the number preceding the Julian date. The date code is found on the bottom line of the tag or stamping.
A complete list of Peerless transmission models is found on the first page of the Tecumseh Technician's Handbook on Smallenginesuppliers.com