Left some gas in tank last year,will turn over but will not start.it does not seem to be getting gas into the carb,will cleaning the carb fix it?

Did you store it with no gas or with fuel stabilizer if you left gas in the tank ?
If not your gas gunky out the carb and the carb will need removal and cleaning.
You can verify if that's the problem by squirting a bit of starter fluid into the the carb after you remove the air filter.
If it runs with the starter fluid, your carb is gunked up.
This is what I use altho' 'Stabil' brand is cheaper -


New PRI Fuel Stabilizer 16 Oz Bottle Gasoline Treatmt eBay

Getting a mower out of its winter slumber takes some time. Start with fresh gas, new oil, and air filter. Sometimes carbs get gummed up(varnisized gas). Donyboy73 on youtube shows how to remove Briggs n Stratton in tank carb systems and clean the parts and passages.

Yes it could be

Clean the gas tank,after a year gas can turn into a gel which will clog the carb,clean the air filter,check spark plug,and readjust the carb(a small screw on the carb

Fuel pump issue.

Clean the carb. There was gas in it when the bike last ran. The gas would have left varnish to gum up the carb.

Clay, you have a tiger by the tail. There are a lot of little parts to the carb system. I will try to assist you in the basics without carb removal. This may require a few replies back and forth. Start by turning off the gas then drain the carbs. Now turn on the gas and check to see that fuel flows into each carb. If gas starts flowing out of all the float bowls, now that the gas is back on, then all carbs are getting gas. To drain the carbs just remove the drain screw on the bottom of each carb float bowl. Two carbs have the drain screw on the left, two have it on the right side. Reply with what you find.

The gas went bad in the carb, and probably clogged the carb jets. It may be necessary to remove the carb and soak it in carb cleaner. And carefully clean out the jet passages with a small wire.

If you left gas in the mower last fall there is a very good chance that the carb as developed a varnish sluge or that the fuel filter is full of ****.
Remove the gas line from the carb - do you get fuel from the tank to the carb?

this may require pulling and cleaning the carb float valve and needle and seat

sounds like a fuel problem in the gas tank or carb. If bad gas or debris gets into the carb fuel bowl, this will fowl up or clog the jets after you start to run your engine. you need to remove your carb and clean the fuel bowl and jets. use a jet carb cleaner to do this. without knowing what type of engine, make sure all ur jets are clean. use a fine wire to insure they are clean and put te carb back together. also check and clean the fuel valve area of the carb, the fuel line, and the fuel tank. never use last years gas and always run your equipment out of gas before you store it for the winter.