MTD 820 Manual
MTD 820 Manual. The MTD model 820 is a riding mower also called a garden tractor with a two blade cut and engine. View or print the MTD 820 Manual below and find out the maintenance schedule for your MTD lawn tractor as well as parts and other supplies. For parts, we suggest using something like MTD Parts or EReplacementParts as they have most common MTD parts in stock and ready to ship.