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Briggs-Fan
Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1264
Experience:  over 15 years experience in small engine repair, multiple certifications
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I have a zero turn mower that will not start. I tried siphoning the fuel tank to no avail

Customer Question

I have a zero turn mower that will not start. I tried siphoning the fuel tank to no avail. Can you tell me how to remove the fuel tank? Or where I can find the information?
Submitted: 2 years ago.
Category: Small Engine
Expert:  Briggs-Fan replied 2 years ago.
Hi my name is ***** ***** welcome to just answer. Is the gas in it old ? , if so you can remove the hose to the carburetor or at the fuel pump and drain it , then drain the carburetor bowl and you should have the bad fuel out
Customer: replied 2 years ago.
I haven't gotten back to it yet. Tomorrow I should be able to.
Thanks for checkin in
Expert:  Briggs-Fan replied 2 years ago.
Ok I'll wait till I hear back from you
Customer: replied 2 years ago.

All the fuel doesn't come out of the tank. I emptied the bowl of the carborator. It was dry, the mower has been sitting a while. There was dried up crud in it. So how do I get the gas out of the very bottom?

Expert:  Briggs-Fan replied 2 years ago.
One option is a siphon hand pump , another is pull the fuel line from the tank of its accessible
Customer: replied 2 years ago.

I got the rest of the gas out and put in some fresh gas. still won't start. It will run a few seconds when I spray carborator cleaner in it. This is the same problem I had before the fresh gas.

Expert:  Briggs-Fan replied 2 years ago.
It's the carburetor, most likely is gummed up or has bad gas in it , what engine does it have ?
Customer: replied 2 years ago.

It is a Kohler Courage Pro SV740

Expert:  Briggs-Fan replied 2 years ago.
Here is the service manual , most likely the carburetor needs to be removed and cleaned
https://www.google.com/url?sa=t&source=web&rct=j&ei=W3GEVYqkDoydNo7WgOgD&url=http://www.kohlerengines.com/onlinecatalog/pdf/sm_32_690_01.pdf&ved=0CCgQFjAA&usg=AFQjCNEfD2jRHlj1J28IGpE16SngPlxdIg
Customer: replied 2 years ago.

Yes I have the service manual. How do you clean the carborator?

Expert:  Briggs-Fan replied 2 years ago.
Page 22 on the service manual has the breakdown of the carburetor, you will have one of the two types of carburetors shown , the one to the left I would loosen the bow bolt which is part m . The one to the right you will have to remove the carburetor and the the screws holding that bolt on
Customer: replied 2 years ago.

Ok I have it off.. Now what?

What am I looking for?

Expert:  Briggs-Fan replied 2 years ago.
Did you drain the bad gas in the bowl , which type carb do you have
Customer: replied 2 years ago.

I did empty the bowl on the carburetor, It had dried gunk in it. It was gritty like sand. I the carburetor appears to be a keihin.

Expert:  Briggs-Fan replied 2 years ago.
Ok the main jets are f and d on the diagram , make sure those are clear also spray out the ports in the carburetor body
Customer: replied 2 years ago.

Ok I removed and sprayed the carburetor. Put it back in and the mower still wont start.

Expert:  Briggs-Fan replied 2 years ago.
How old is the gas your using ? It hasn't tried to start or even sputter since it died right ? . If not we need to check for spark
Customer: replied 2 years ago.

The gas is new. The only time it sputtered was when I sprayed the carburetor cleaner in it. sputters for a split sec.

Expert:  Briggs-Fan replied 2 years ago.
We are going to have to look further into it because a motor needs 3 things to run . Spark, fuel and compression , if you cleaned the carb and the Jets and the bowl is filling up with gas it's getting fuel , if it sputtered it should have spark but I would test it , if it has spark the next thing I'd check is if a push rod bent etc
Customer: replied 2 years ago.

I got the mower to turn over a few times. It runs for a couple of sec's and shuts down.

Expert:  Briggs-Fan replied 2 years ago.
At this point it could be the carb is bad or the fuel pump but it Def sounds like a fuel issue