[msta999]

Hi all. I'm new to the forum. Stopped by a couple months ago and read some.

My problem is I have this Murray that has had the 17.5 hp single cylinder engine replaced with a 17 hp twin cyl engine. It will start just fine and run good for about 15 min, then dies like it is running out of fuel. If I pull the choke out most of the way it will start and run a little while longer. I took the side of the carb apart and cleaned it, it does not have a float bowl, but a houseing with a couple of what look like check valves and ballows with a spring. After cleaning out a couple of what look like vents in the cover of this housing, it did run better, but still dies. I put on a JD pump thinking the pump was bad, but it made no difference. Any ideas?

 

[Mark / Ohio]

Don't overlook the possibility of a clogged vent in your gas cap.

 

[msta999]

Thanks. I was looking at that. took it off a couple times when it wouldn't start.

 

[Mark / Ohio]

I've never saw a carb without a float bowl on Briggs engines larger then 5 hp. The ones I have seen were all tank mounted carbs. There's information on a bunch of Briggs carbs at the link below. Maybe one of them will match up and be of some help to you.

Small Engine Equipment Troubleshooting, Repairs and Safety

 

[msta999]

I just wasn't familiar with this type. I pulled the top of the carb off and it was sitting under it. I cleaned everything up and will have to see if it makes any difference. I ran it for 15 min, but had to leave and shut it down, so it is next weekend when I mow again, is when I'll find out if it made any diff.

Thanks guys.