Re: B&S 5hp engine suddenly runs slower?
Thanks for your reply.
I actually removed the gas cap when it FIRST happened.
I have studied the gas/carb diagrams (parts list). Where it shows a Fuel Filter (part #240), it does NOT look anything like my engine. Mine is a plastic shut-off valve. ON/OFF. I disconnected the line and actually removed the gas tank.
Gas flowed freely and it was clean. YES. it could be an intermittent disruption of gas flow lasting several minutes at idle speed, but the next day (with no changes/fixes,etc.) it ran normal as I said for over 30 minutes.
NOTE: My on-off valve does not look like it could also be a filter, and it doesn't look like the filter pictured in the parts diagram (#240 $3.04 or $3.80).
When I removed the gas tank and the metal housing it exposed the top of the Carb and the rest of the fuel line to the Carb (no fuel filter seen).
What I did see was TWO linkages that go to a "flange" on the top of the Carb. One is a solid piece and the other a VERY THIN (with a spring about 3/4" long) SURROUNDS this linkage. Where both ends of the solid heavy linkage are attached, the VERY THIN linkage is not attached to a very small hole in the carb flange. It has a slightly bent curve at the end and it just might have become FREE from it's designated hole right next to the solid linkage which is attached to the carb flange.