I'm with Rivets all the way on this...
seized At the time of an oil change....
(that's possible, low lube will generate a lot of heat, things will expand and when using the engine power to keep things moving, a lot of the parts are going to bind up, after stopping the engine,The starter will not have enough HP to get them moving again)....
5 volts at the starter isn't necessairly a problem... I am not sure what a Locked starter will draw... But it could easily pull enough amps to load a 12 volt battery down to 5 volts, that's possible..
Operating an engine with low oil is surely the operators responsibility, (you "should" always check oil levels...) Not everyone does, including me.
It's easy to assume is going to be there, because it was there the last time used...
B&S along with other engine manufactures have had a lot of new engine failures because of lubricant problems... Engines are always shipped with no oil ... and sometimes, it is overlooked or improperly serviced at the start of it's life...
I wish you good luck, but if you get anything I think it will be at the dealers expense... someone else may have contributed to the low oil level... But as the end user, the ultimate responsibility should fall to you.
You may be Notsohappy now, but in the longer run... You do have an exceptional mower & other than having a bit More $ tied up in the initial cost, you will still have a great mower.
Plus this is a timely reminder for all of us to remember to check the oil, (first day of Summer, & Heat places a lot of demand on oil) .
Post back with the outcome, and try to become a bit less, Notsohappy... :smile:KennyV