699728 fuel solenoid. 699814 carb kit. These are the part numbers that you should have gotten for rebuilding the carb. I don't think you are getting too much fuel, but you are not getting enough fuel. The round pieces of foam go around the throttle and choke shafts, to keep dirt from entering between the shaft and carb body. When you check the carb, check to see if the fuel solenoid is working properly, drawing the plunger in all the way. To do this apply 12V to the two connections and the plunger should pull back. I'm also including a different manual, sorry I gave you the wrong one, this may contain your carb.
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Carb getting to much fuel??
- Thread starter drhess
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Export threadThe fuel solenoid is working, i checked it before I installed it and about 10 times since then. turn the key on and off and the plunger goes in and out. The old solenoid did not go in and out, so I know it was bad. So unless it is supposed to do more than that the new one is working fine. And yes i do have the correct parts, i have the illustrated parts manual for the engine from B&S online. thanks for checking on those part numbers.
I am not sure that i am following you on the not getting enough fuel theory...As I mentioned above when I pinch off the fuel line and restrict the fuel getting to the carb it runs perfect, when i release the fuel line it floods and won't run. You can visibly see fuel in the intake of the carb with the air filter removed, when the fuel line is not restricted. So if I restrict the fuel going to the carb and it runs good how can the problem be that it is not getting enough fuel???? I am not totally doubting you, just not following this theory.
thanks for the new manual. I have not had a chance to check the float and needle yet, to many other honey do's... :smile:
I am not sure that i am following you on the not getting enough fuel theory...As I mentioned above when I pinch off the fuel line and restrict the fuel getting to the carb it runs perfect, when i release the fuel line it floods and won't run. You can visibly see fuel in the intake of the carb with the air filter removed, when the fuel line is not restricted. So if I restrict the fuel going to the carb and it runs good how can the problem be that it is not getting enough fuel???? I am not totally doubting you, just not following this theory.
thanks for the new manual. I have not had a chance to check the float and needle yet, to many other honey do's... :smile:
getting closer on the manual, my carb is a single not a double barrel, try this link to see on Briggs and Stratton web site.
Customer Support | Briggs & Stratton
when page opens scroll down for parts manual
the carb part# is 699807
Customer Support | Briggs & Stratton
when page opens scroll down for parts manual
the carb part# is 699807
I am confused by symptoms that indicate two different problems. Fuel in carb, pinching off fuel line, rough idle, all indicate too much fuel. Float setting, bad needle seat, float bowl gasket not installed right, would all be causes. Problem I have is that this condition should give us black smoke due to a very rich fuel mixture.
Blowing white smoke on startup, is normally an indicator of a lean fuel mixture caused by water or moisture in the fuel system. Please add recheck the bowl gasket to the list of things to check. We have to solve the excess fuel problem first. I know the type of carb you have and not getting a good seal on that type of bowl gasket is a common problem.
Blowing white smoke on startup, is normally an indicator of a lean fuel mixture caused by water or moisture in the fuel system. Please add recheck the bowl gasket to the list of things to check. We have to solve the excess fuel problem first. I know the type of carb you have and not getting a good seal on that type of bowl gasket is a common problem.
Mini Motors
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White smoke? Or blue? Is it thick(lots)? It could be a coincidence and you have two issues pop up at once.
White smoke usually means that you're burning coolant. Since this is an air cooled engine, that isn't possible. Thick blue smoke, on the other hand, is burning oil. And this can mean either a bad valve seal, or a cracked piston ring.
White smoke usually means that you're burning coolant. Since this is an air cooled engine, that isn't possible. Thick blue smoke, on the other hand, is burning oil. And this can mean either a bad valve seal, or a cracked piston ring.
Just to update everyone I still have not figured this one out. I did pull the carb back off and checked that the needle is seating properly, it is. Checked that the float is also installed correctly and I installed a new float bowl gasket paying special attention to it when I reassembled. Still runs the same.
To recap the mower will still run perfectly if i restrict the fuel by pinching the fuel line. So i don't believe that i have a cracked piston or valve problem. Again the engine runs with no problems if i restrict the fuel by pinching off the fuel line. Somehow to much fuel is getting through the carb. So i guess it is off to buy a new carb and hope it fixes the problems.
Good thing it is winter and the grass is not growing :smile:
To recap the mower will still run perfectly if i restrict the fuel by pinching the fuel line. So i don't believe that i have a cracked piston or valve problem. Again the engine runs with no problems if i restrict the fuel by pinching off the fuel line. Somehow to much fuel is getting through the carb. So i guess it is off to buy a new carb and hope it fixes the problems.
Good thing it is winter and the grass is not growing :smile:
PittsburghKnights
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Just to update everyone I still have not figured this one out. I did pull the carb back off and checked that the needle is seating properly, it is. Checked that the float is also installed correctly and I installed a new float bowl gasket paying special attention to it when I reassembled. Still runs the same.
To recap the mower will still run perfectly if i restrict the fuel by pinching the fuel line. So i don't believe that i have a cracked piston or valve problem. Again the engine runs with no problems if i restrict the fuel by pinching off the fuel line. Somehow to much fuel is getting through the carb. So i guess it is off to buy a new carb and hope it fixes the problems.
Good thing it is winter and the grass is not growing :smile:
Did you ever solve this problem? I have the same thing going on... Very confused as to what to do.
I missed this thread before. You have good help available with Rivets and others, but I will add a comment. In the old days of carburetion it was possible to install a fuel pump which delivered too much pressure and would force the inlet needle to open ( I remember 3 lbs for car), but one would expect black , rich smoke, Have you read the plug(s) colors? And when you say pinch off lets engine run perfectly that is static, or sitting without load (unless you are plastic man). So running perfect is stationary? As you know the governor opens the throttle under load (power) and demands richer fuel for a short time, so you may not really know everything that is going on. Float setting is important and I have no experience with this carb. But is there a spec for full droop of float (as when bowl is filling after demand) controlled by a bendable tang, and/or an inlet needle shut off spec? Both taken by careful measurements usually to the float lid (with gasket in place) to the float? Is inlet manifold sealing ok?