I prime the carb and when I pull the starter rope it starts and runs a couple seconds and cuts off. I have cleaned the carb completly 2 times and changed the coil and spark plug have good spark at plug but it will only run a couple seconds after priming.

 

What do you consider cleaning the carb. ?
Removed the bowl and moved the float up and down to make sure there's gas getting to the carb. and completly shutting off when lifting?
Any fuel filters?
A real model # would help figure out what you trying to work with.

 

The engine model# OVRM 120, and what i did to clean carb was removed carb from mower and took the bowl off and cleaned all the holes out in the bolt with carb cleaner turned upside down and removed float and needle and sprayed carb cleaner through all the holes to make sure they were clear put everything back together and replaced air filter couldn't find any fuel filter.

 

Most likely it is still a carb restriction but it could also be the zone cable not pulling the kill switch far enough.