What's missing

[slomo]

Lower part of your block is FILTHY. Pull the engine cover and clean that mud pit out. Must be a Saturday Night mud bog special.

 

[slomo]

Nothing has fallen out next to the starter motor. The blower cover and shielding isn’t positioned correctly.
Take the blower cover off and clean everything good. Check all of the wiring connections.Put the blower cover back on. Pay close attention to the tin shields on the side of the engine. The tin shield next to the starter is out of place. It should be tucked into the blower shield. Those blue wires should be in the slot of the tin shield.
You either have a fuel or electrical problem.
Is the oil level correct?

Nice catch on the tin air ducting shields MParr. Spot on as usual sir.

 

[StarTech]

Could also be something to do with the electric choke. Just depends on how the engine dies.

Currently Briggs hasn't put an IPL for this engine but said to use the 31R577-0033-B1 for most parts except for the carburetor.

I asking Briggs what is the purpose of the snap switch in the image.

 

[Tinkerer200]

Welcome,
Walt Conner

 

[hlw49]

Have you ever, removed the top engine cover and looked at the block cooling fins for grass, oil, grit, mice and their nests and the like? Did you know that one scalping session can clog said fins and cause overheats? Did you know this is in your engine manual as a yearly item as in a MUST DO?

Just got a mouse nest out of one today. I hate meices to pieces. Cleaned lots of them out of engines.

 

[Rainbowjohn]

Nothing has fallen out next to the starter motor. The blower cover and shielding isn’t positioned correctly.
Take the blower cover off and clean everything good. Check all of the wiring connections.Put the blower cover back on. Pay close attention to the tin shields on the side of the engine. The tin shield next to the starter is out of place. It should be tucked into the blower shield. Those blue wires should be in the slot of the tin shield.
You either have a fuel or electrical problem.
Is the oil level correct?

Yes oil level is correct but where is oil level sensor ?

 

[Rainbowjohn]

Just got a mouse nest out of one today. I hate meices to pieces. Cleaned lots of them out of engines.

All clean under engine cover, no grass or mice.

 

[StarTech]

Yes oil level is correct but where is oil level sensor ?

There is no oil level sensor.

The switch in the picture that I asked Briggs is a temperature operated one and would be related to the choke electric solenoid.

With running only 5-10 minutes it is more likely the ignition coil failing or fuel supply.

 

[slomo]

All clean under engine cover, no grass or mice.

Really? No oil leaks attracting grass and dirt either, all over the block and fins? Even under the air directing pan that goes around the block? Behind your muffler or any other areas?

This must be a brand new or hardly used mower. But wait, the included picture, the lower block is filthy. Don't think your comment is accurate sir. I bet a cold beer that block is grungy.

Either you don't know where or what the top engine cover is or are calling the top side of the cover grass and mice free. Look UNDER the top cover. Look for some cooling fins.

 

[slomo]

Crack the fuel tank cap when it dies. Maybe your cap is not venting.