Thanks charmaine. Off topic, the easiest way to undo that blade plate bolt on the Rover/chonda is to take the mower to your local tyre shop and get someone to undo it with a rattle gun (trade-talk for impact wrench). It shouldn't actually be very tight. Don't do it up with an impact wrench: it should only be tightened to 25 lb-ft, which is easily done with a socket spanner.

Your Briggs engine was built on 1 August 2005. It is 148 cc displacement, and has a Pulsa-Prime carburetor. Here is the Illustrated Parts List:
http://bsintek.basco.com/BriggsDocumentDisplay/18luzGXBnfBhU7y.pdf

Here is the Operator's Manual:
http://bsintek.basco.com/BriggsDocumentDisplay/flmrtKX-nfBhU7y.pdf

The Pulsa-Prime is not very complicated. It does not have any fuel pipes: the carburetor is screwed directly onto the top of the fuel tank, and it sucks up fuel from the tank by using a little built-in fuel pump. From your symptoms, it is likely that either there is a simple blockage in the carburetor, or the fuel pump's diaphragm has deteriorated while it was out of service. The blockage seems more likely, because it ran for a while then stopped, rather than just not starting in the first place, but a pump diaphragm fault is not at all unlikely.

Here is a video that shows how an experienced serviceman would do exactly the job you need to do:


The diaphragm and gasket are not very expensive. Check the Outdoorking on-line store. To give you an idea of the price, here is a local Australian ebay seller with free postage:
http://www.ebay.com.au/itm/Briggs-a...mowerAccessories&hash=item19e2808975

You'll also need a spray can of carburetor cleaner, which will cost about $10 from a speedshop.

Last edited by Bruce; 12/08/17 10:46 AM. Reason: Corrected Youtube