Can't find model or serial number on old 21" Toro

[trooper1954]

I have an old (probably at least 20 years) Toro 21" self propelled mower for which I need a parts diagram. I cannot find any serial or model numbers anywhere on the mower, and I need to replace the bolt that holds the height adjuster to the deck. Anyone any ideas?
Thanks.

 

[Two-Stroke]

I think the model numbers were on the back of the deck a few inches behind the engine but they were on decals. But your decal -- most likely -- has peeled off.

Could you post a photo? Also, are there any markings on the engine?