OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Reel Lawn Mowers, Atco & Villiers etc. Masport Olympic 660

Hi Max
Its really a silly numbering system as similar motors 10 years apart have the same date code

So basically if someone rang up a mower shop with the model and serial number, unless you have a photo of the thing there is no easy way to work it out - tecumseh fixed the problem later in the 90s and added a digit.