Briggs and Stratton Lawnmower Engine not running well

[garmcqui]

Hi all,

I have a Mountfield (I am UK-based) push mower with a Briggs and Stratton engine that isn't running well. The model number stamped onto the engine is: 10D902-0153-B1

It seems to stutter and is putting out more smoke lately, especially when the revs dip. The revs seem to fluctuate a lot, and dip a lot if I change the mower's direction (especially if I'm pushing it forwards and then pull it backwards).

I've attached a couple of brief videos so you can see what I mean. I would be very grateful if anyone in the know could take a look and advise.

https://www.youtube.com/watch?v=_JAjoNJPMQs << 2nd video

Many thanks in advance,

Gareth

 

[Mikel1]

Have you tried cleaning carb? Fuel tank may need cleaning.

 

[MowermanUK]

Needs a new fuel pump diaphragm without a doubt!!

 

[lawnmo]

Hello buddy ,need to have the screw in the carburetor to test run it.there is also a very small screen in the carburetor that gets clogged with debris,take apart the carburetor give it a good cleaning blow the injector with compressed air and give her a try. Good luck and GOD bless.

 

[mechanic mark]

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