Allotment Gardening Advice Help Chat

Chatting => Equipment Shed => Topic started by: Browser on April 09, 2009, 17:33

Title: DM engine playing silly *
Post by: Browser on April 09, 2009, 17:33

Hi, the B&S engine on my DM cut out when last used and then refuse dto start, A wait of a few minutes had it starting on choke and then stopping after a few seconds. Repeat the wait, repeat the start/stop mode. It's one of the ones with the fuel dip pipe extending down into the fuel tank, so I assume the carb suck the fuel up somehow? I'll have to check the strainer on the end of the dip pipe but am wondering what else to look at?

Title: Re: DM engine playing silly *
Post by: Gwiz on April 09, 2009, 18:14

Try loosening the fuel cap, don't run it with it removed, just loosen it and let the engine run for a bit. Sometimes they don't breath correctly if sat around for a while. That's the most simple thing to try first.
The next step is to remove the carb/ tank assembly and take the tank off. On the side of the assembly is a rectangular plate held on by four screws. Behind that is a diaphragm that becomes quite "baggy" after a time. While the plate is off, you will see two holes. One of these goes straight down the fuel pick up pipe. A good blow down that with an air line, will remove any "stuff" that is on the pick up filter on the end of the pipe.
A new diaphragm should cost you no more than £1. I would ALWAYS replace the gasket between the carb and the tank with a new one. For safety's sake you don't want spilt fuel getting onto that nice hot exhaust, do you? ;)

Title: Re: DM engine playing silly *
Post by: Browser on April 09, 2009, 20:03

Thanks Gwiz, I had read elsewhere that that diaphragm had summat to do with fuel pickup so I'll get a new one anyway. Already done the carb-to-tank gasket but that'll be renewed as well.