Small Engines (Lawn Mowers, etc.): helppppppppp, techumseh, western hemisphere

Question
i have a 2006 techumseh enduro xl/c 357cc overhead valve 7500 watts western hemisphere i dont wich number is the modle number. my question is this. some times when i start it it runs fine for days then all of a sudden it will just shut off like some1 throgh a switch. ill go and it will start rite back up without doing anything other than pushing start button as long as i wait like 10 seconds if i try before that i end up having to chock it. but the problem is sometimes it will shut rite back off exzactly what i count as 11 seconds everytime and some times ill start it up and its fine for the next two days and other times i will have to restart it up to 20 times then i end up leaving it alone then ill come back an hr or so and it will start and run fine for a while or it will shut down like in 20 min almost like its heating up. other than this this is a great running generator oh also the on and off switch doesnt always work but i think that is just a conection. i hiope you can help me ive tried changing plug,fuel filter and oil. ive looked over the generator pretty close dont seem to be any rusty conects or bare wires etc. my email is  and phone number is  calling might be easier. thanks and i have no idea what numbers are which and i promise i wont yell lol

Answer
Chris
There is a low oil sensor on the engine,it will let the engine start and run foe a while then shut it down so the engine doesn't get any damage. The off/on switch could be grounding out with the vibration. I would also clean the carburettor to make sure it doesn't stick.