Small Engines (Lawn Mowers, etc.): Lawn Mower, model numbers, lawn mower

Question
My lawn mower starts for a few seconds then dies off.  If I try to restart it it won't.  What might be the problem?

Answer
Several things come to mind, but they are general, without knowing which engine you are asking about.  If you could reply with the model
numbers off of the engine, that would be helpful.

First remove the air filter, and have a can of carb spray.  Start the mower, and run.  When it starts to die, give a light squirt
into the carb to see if it will run a little longer.

If it doesn't, then you might start looking at the valves.  If it is an OHV, then checking and adjusting is not too hard to do.  Try this
test, and let me know the model numbers and we can go from there,
Thanks,

    Fish