Poorly running Murray with B&S

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  #1  
Old 09-19-04, 02:09 PM
Treborek
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Poorly running Murray with B&S

I have a 22" side-discharge mower with a 4.0 HP B&S which has developed a running problem that sounds as if I am gunning the engine every second on the second. It is also hard to start and seems to be using about 4x as much gas as usual. The mower is about 2 1/2 yrs old and I have, after reading some posts here about similar problems, changed the plug and air filter, taken the fuel tank & carb off and cleaned them, and replaced the rubber diaphram between tank and carb. It appears that there are no adjustments on the carb, the throttle only moves in response to the governor, the prime bulb works fine. What could be wrong with a carb this simple, and if not a carb problem, what is it? Thank you for any help.
 
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Old 09-21-04, 01:14 AM
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Still sounds like a fuel or carb problem. Possibly water in the gas? Did you clean the pickup tube screen and verify that the tube is clear?
 
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Old 09-29-04, 03:32 PM
Treborek
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Thanks for the reply, cheese. I tried cleaning and fiddling around with the carb again and couldn't figure out what was wrong with it so I bought a new one ($20.00) and installed it. Problem fixed!
 
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Old 09-30-04, 01:26 AM
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Glad you got it!

The carb is plastic, and the jet seems to work loose sometimes, and nothing really can be done for it. The carb warps sometimes too. Replacement is the only option in these cases.
 
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