3.5 hp vertical shaft lawnmower engines, I have a couple parts ones, and am running out of known good carbs.
This is your typical carb on top of gas tank set up, where if you take the carb off there's a straw that goes into the tank and a little thimble/puddle of gas in a reservoir on top of the tank/ in an indentation that it somehow sucks up.
I am at a loss as to how it gets there. Does the diaphragm somehow vibrate?
My issue is I can run good for a minute or several then it stops dead quite quickly. The primer bulb squirts air then reprimes and things start right back up. I figure slightly less gas than I need is making its way up then it suddenly dies.
Things look fantastically clean when apart and the diaphragm doesn't "look" torn. I use sta-bil in the winter but the gas caps on these are so bad the gas evaporates off. Still, no visible gum/varnish, and I've given everything the once over with carb cleaner. Main jet looks clean, poked through it with a bread tie just for giggles.
This is your typical carb on top of gas tank set up, where if you take the carb off there's a straw that goes into the tank and a little thimble/puddle of gas in a reservoir on top of the tank/ in an indentation that it somehow sucks up.
I am at a loss as to how it gets there. Does the diaphragm somehow vibrate?
My issue is I can run good for a minute or several then it stops dead quite quickly. The primer bulb squirts air then reprimes and things start right back up. I figure slightly less gas than I need is making its way up then it suddenly dies.
Things look fantastically clean when apart and the diaphragm doesn't "look" torn. I use sta-bil in the winter but the gas caps on these are so bad the gas evaporates off. Still, no visible gum/varnish, and I've given everything the once over with carb cleaner. Main jet looks clean, poked through it with a bread tie just for giggles.
