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Post by stancejontland on Jun 2, 2016 16:46:45 GMT -5
Hey guys I have a Briggs and Stratton lawn mower and it was running fine but leaking fuel took the tank off fixed the issue but now it won't run. I prime it then start but it dies right away. If I keep pumping the primer it runs off that gas any help ?
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Post by iwiketuddlz on Jun 2, 2016 18:21:20 GMT -5
Clogged main jet? Possible anyway
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Post by 90GTVert on Jun 2, 2016 18:44:03 GMT -5
Clean the carb.
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Post by ryan_ott on Jun 2, 2016 19:30:50 GMT -5
Check that you didn't knock off the governor linkage and or springs.
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Post by stancejontland on Jun 2, 2016 20:02:44 GMT -5
I cleaned the carb very thoroughly seems to wanna run fine. It ran perfect before I got my hands on it by the end of the day it only runs when I prime it or if I keep pushing the prime button. It dies if I stop pushing fuel in I didn't do anything only line I took off is throttle control because it has self drive
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Post by acvw74 on Jun 2, 2016 20:18:09 GMT -5
Does the carb have a diaphragm? It is usually between the carb and tank. If so, it could be torn
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Post by stancejontland on Jun 2, 2016 20:38:19 GMT -5
  Where can I find a new diaphragm? I think mine is pretty rough |
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Post by acvw74 on Jun 2, 2016 21:04:03 GMT -5
Thinking about it a bit more ...If you didn't remove the carb from the tank...you might be ok...It has been a long time since I wrenched on these...but its more likely that intake isn't connected quite right or is leaking...sometimes they are hard to get back together.
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Post by gsx600racer on Jun 2, 2016 21:11:33 GMT -5
When you had the tank and carb split, did you loose the spring that is part of the gasket in pic below?  Here is a couple links outdoorpowerinfo.com/repairs/briggs_pulsa-prime_carb.aspoutdoorpowerinfo.com/repairs/briggs_vacu-jet_vert_auto_all-temp.aspIf you try to run it without the air filter, install the long screw that holds the air filter assembly on or it will never run right. Adjust the mixture screw with the air filter installed. These carbs need the restriction of the air filter to run correctly. Funny, I just worked on one of these engines today. The gas in the tank was almost shellac. The engine I had was older and did not have the primer bulb. Good luck |
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Post by 2stroked on Jun 2, 2016 22:02:06 GMT -5
Check to be sure that the rubber O-ring and the plastic retainer clip are both still on the in take tube. Also, check the diaphragm an gasket to see if they went back on in the right order.
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Post by stancejontland on Jun 2, 2016 22:38:17 GMT -5
My spring is under my diaphragm or am I wrong?
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Post by stancejontland on Jun 2, 2016 22:40:06 GMT -5
When you had the tank and carb split, did you loose the spring that is part of the gasket in pic below? Here is a couple links outdoorpowerinfo.com/repairs/briggs_pulsa-prime_carb.aspoutdoorpowerinfo.com/repairs/briggs_vacu-jet_vert_auto_all-temp.aspIf you try to run it without the air filter, install the long screw that holds the air filter assembly on or it will never run right. Adjust the mixture screw with the air filter installed. These carbs need the restriction of the air filter to run correctly. Funny, I just worked on one of these engines today. The gas in the tank was almost shellac. The engine I had was older and did not have the primer bulb. Good luck Mine looks exactly like that picture apart from the diaphragm or whatever |
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Post by gsx600racer on Jun 2, 2016 22:41:08 GMT -5
My spring is under my diaphragm or am I wrong? The spring should be on the gas tank side of the gasket. |
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Post by stancejontland on Jun 3, 2016 0:19:49 GMT -5
My mower won't stay runnin long enough for me to adjust it
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Post by 2stroked on Jun 3, 2016 21:44:57 GMT -5
All of the PLASTIC Briggs carbs I have seen,have the spring between the carb body and the diaphragm. Since the went to that throttle free crap,they have changed a lot of stuff.
I recently had an issue with a Briggs engine that would start,run for a we one and die. Turns out someone had cleaned the carb, and got the gasket and diaphragm out of order. Switched it around and it now runs like a new one.
If the pullcap top is loose much at all, inspect the plastic intake tube for cuts. I stripped one of the mounting screw holes and the cap vibrated a cut almost half way through the intake.
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