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- May 1, 2020
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I am working on a neighbors Briggs 18.5 hp OHV engine on her Craftsman DLT 3000 riding mower. It has a 698445 carburetor on it and it is "flooding out" dumping way too much fuel in the carb and is actually spitting out air filter intake and if cranked long enough will spill out exhaust. It fouls out the spark plugs so I need to remove the plug clean and let dry and it will fire up and run good for 30 seconds, then sputter for about 30 seconds and dies. Then it wont start and spits fuel everywhere again. I pulled off fuel bowl to check float, it seemed fine and shot it with some carb cleaner and reinstalled. I am a loss. I will try to attach pics of the carb and a few questions. (name the part please) what is black adjuster screw on top (pic 198) and what does it do? Does the throttle stop adjuster screw (pic 200) need to be turned in some? Is the choke lever (pic 199) supposed to have a spring on it where there is an empty hole (pointing at it with pencil in pic)? What is the electrical plug for at the bottom of the fuel bowl? While I had the fuel bowl off I inspected the nozzle and it seemed fine. No issue with getting fuel as it is getting too much fuel at this time. More fuel spitting out of intake when throttle lever is in choke/full throttle when starting. Spits fuel at all throttle positions but worse in full/choke. Thanks for your time.
Maintenance I performed last weekend on the mower. Changed battery, fuel filter, oil and filter and spark plug. Recommended to her running marine fuel (ethanol free fuel) in it to make it run smoother as I was advised by a neighbor (he swears by ethanol free in everything small engine) I only run it in my trimmers. None of the "tune up" maintenance should have caused this problem. It was running well last weekend when I returned mower to her. First time she tried to use it 2 days ago. Flooding issue.
I never could figure out how to resize pics to work in text so here is photo album link inside this forum with my pics numbered 197-208.
Maintenance I performed last weekend on the mower. Changed battery, fuel filter, oil and filter and spark plug. Recommended to her running marine fuel (ethanol free fuel) in it to make it run smoother as I was advised by a neighbor (he swears by ethanol free in everything small engine) I only run it in my trimmers. None of the "tune up" maintenance should have caused this problem. It was running well last weekend when I returned mower to her. First time she tried to use it 2 days ago. Flooding issue.
I never could figure out how to resize pics to work in text so here is photo album link inside this forum with my pics numbered 197-208.
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