murray push mower wont turn

D2hornets58

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• Jul 5, 2012 / murray push mower wont turn

• #1

I have a 20 inch murray push mower. It has a Briggs and Stratton engine. It has been running fine up until now. I went to start it today and it wouldnt start. After pulling the pull cord multiple times it locked up. Now i cant pull the cord anymore. There is no grass clogged up near the blades. I took out the spark plug and i was still unable to pull it. The oil level is fine. Any ideas what this could be and why it happened?????????????????????????????????????

 

R

Rivets

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• Jul 5, 2012 / murray push mower wont turn

• #2

Check the oil, does it smell like gas, if it does the float needle valve in the carb probably stuck open and filled the cylinder and crankcase with gas. If I am correct and you find fuel in the crankcase or cylinder it is not a hard fix if you are handy. First, pull the spark plug and ground the spark plug wire. Pull the engine over a couple of times carefully, as fuel may come flying out. Second, change the oil. Third, get a new needle and seat, plus bowl gasket and rebuild the carb.

 

D2hornets58

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• Jul 6, 2012 / murray push mower wont turn

• #3

OK ill check the oil for gas later on...Thanks

 

D2hornets58

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• Jul 6, 2012 / murray push mower wont turn

• #4

I smelled the oil and it definatly smelled like gas. When I tried to pull it with the spark plug out i still couldnt pull it.

 

G

greggn

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• Jul 7, 2012 / murray push mower wont turn

• #5

The crankcase / behind the piston is full, leaving no room for the piston to go to bottom dead cylinder position. So instead of compressing air you are trying to compress oil/gas.