Any owner's manuals for an AC 611 LT?

[DorneyMA1]

I bought my first house, and also my first lawn tractor.
The house came with a "manual", the tractor did not.

[Kent]

That would be a Simplicity 4211 equivalent. If you use the cross-ref section with your exact MGF tractor frame number (169????) you can get the exact Simplicity match and order an operator manual from your local dealer. A geneal repair manual is also available for the 4200 series.
Most important maintenance: check and fill engine with oil if need every time before using. If you have a dipstick wipe it off first and then screw it in all the way to get actual level.