MTD's current (1997 and later) model and serial numbers are generally 11 characters in length. A character could be a number, dash or a letter. If 0 represented all numbers and/or dashes and X represented all letters, the model and serial numbers should appear as follows: 00XX000X000. Walk-behind model and serial number plate is located on the rear left side of the deck. Riding mower model and serial number plate is located on the underside of the seat. Tiller model and serial number plate is located on the tine housing. Two-stage snow thrower model and serial number plate is located on the frame cover, between the wheels. Single-stage snow thrower model and serial plate is located on the units frame, near the belt cover. String trimmers have a small model and serial number sticker located on the units starter housing. Chipper-shredder-vacuum model and serial number plate is found on the rear frame of the unit. Leaf blowers have a small model and serial number sticker located on or around the starter recoil assembly. Edger model and serial number plate is located on the rear frame of the unit. Cultivators have a small model and serial number sticker located on the engine housing. Chipper shredder model and serial number plate is located on the frame, below the chute. Trimmer-plus attachments have a small model and serial number sticker located on the shaft of the unit.