I have an opportunity to purchase an 820 Grasshopper but can find zero info on it. The Mower shop website doesn't list one. Supposedly it is an 1984. Anybody? Also my current project of restoring a 1622 model (1985) is progressing nicely. Drives rebuilt, and frame painted and all wiring redone. Engine rebuilt as an 18hp because it was cheaper (by over $500.00) to buy a 18hp cylinder case and found NOS complete parts from crank to valves. Pictures as soon as painting is done! probably next spring. Anyhow, Thanks and if anyone can help I appreciate it!