Cranky walk-behind:

11 years ago

Yeah, i have one of those machines. It came on trade, because nobody has yet figured out what is wrong with it.

A B&S engine. new spark plug. Changed fuel tank/carb combo. Found round rubber gasket to intake manifold gone. Replaced it. No rust on mag, nor flywheel. Not it. Re-installed original tank/carb combo. Manifold not cracked. Changed ignition coil/magneto. Checked safety shut-off. Disconnected Safety wire. Not that.

It will start right up, with the usual priming, and run for about 15 seconds, really good, until i think i have solved the problem, and then it goes back to sputtering, missing, and just plain cranky again. First, I checked the flywheel key. Like new, not nudged nor sheared.

I checked with a friend who has a mower repair shop. He asked if it looked like the blade had hit something. Nope-looks good.The only thing i haven't replaced is the tank to carb gasket. Thats tomorrow. But, it ran the same way with another carb/tank combo from stock!

Any help will be greatly appreciated! RJ

Comments (3)

tom_nwnj
11 years ago
I think most gas tank caps have a vent. If the vent is clogged, it creates a vacuum, gas doesn't run smoothly to the carb. Engine will start, but run rough.

See if you can clean off the gas cap with an air hose.
wheely_boy
11 years ago
Are you sure you have real gas in that thing?

I know I get real cranky when I have bad gas.
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rustyj14
Original Author
11 years ago
To Wheely Boy: Yes--it does have gas in it! Tank is nearly full. New gas, fresh from the station yesterday.
This mower looks almost new, especially the inner parts surrounding the engine. By inner parts, i mean the ones you can see, with the flywheel cover removed.
I don't have any money in it, the owner traded it in on a nice used one i had here. At least, i'll have some new looking parts for other ones.
I decided to clean out the garage today. Two bags full, and i haven't really got started. A pile of steel and irony aluminum. RJ