OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Briggs & Stratton Engines B & S Engine 35 - Model 90902

I have a B & S victor mower that has sat for a few yrs, given it an oil an fuel change, cleaned the spark plug, an managed to get it going yesterday, but today it started fine ran for about 20 minutes an putted then shut down as if it was out of fuel (but wasn't) and now can't get it started again. It coughs and pops and nothing.
Can get more info - model no. etc tomorrow.

Thanks

We can be more specific when we see the Model, Type and Code numbers, and a picture, charmaine, but first guess would be that there is a problem in the fuel system due to standing for years with old fuel in it. It probably won't be difficult or expensive to fix.

What happened to your Rover-chonda? Did you fix the oil leaks?

No I haven't fixed the rover yet, an haven't got the muscle to get the blade plate undone.

Ok Victor mower, MODEL - 90902, TYPE - 2091 B1, CODE - 05080152.

was there any sort of smoke or strong smell of petrol ? most of those are a really good thing and an easy repair too . maybe only a blocked airfilter or diaphragm problem seems they dont enjoy sitting with old fuel and distorts the diaphragm or blocks fuel pickup . but i'll leave it to the briggs guru , grumpy . black or grey smoke , not white

Wack a Diaphram kit into the carby...a MUST DO

it had light blue smoke, but may not have had enough oil after the change. Will be re-cleaning the air filter. But not sure how to go about flushing out the lines or how to do the carbi.

Unfortunately I'm learning as I go with most of it, so all the help I can get is greatly appreciated.

Thanks

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.

Thanks I'll check them all out an let you know how I go with it.