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briggs not running good
#1
B
basstracker
B
basstracker
I have a 6.5 hp push mower, the carb has a flote. I put a new kit in it but it still don't run like it should. i put the seat in with grove facing the bowl,is that right or does it matter. thanks
#2
R
Rivets
R
Rivets
Rings should face the carb body. Here's the procedure I recommend.
Needle and seat replacement
Remove the carb, and then remove the float bowl. Check the float bowl jet (which is the bowl screw) and make sure the jets both horizontal and vertical are clean and open. Tip the carb upside down and remove the float pin and float with needle attached. Look in the float needle passage and you should see the red float seat at the bottom of the passage. This is where a #5 crotchet hook would come in handy as you need to remove this seat. If you have no hook, but compressed air, you can blow through the fuel inlet and try to pop the seat out. Put your thumb over the passage to prevent the seat from flying who knows where. No air or hook try bending a stiff paper clip to dig the seat out.
I would either give the carb a good 24 hour soaking or have it ultrasonically cleaned at this time.
With the seat out clean the passage way with carb cleaner. Now you must find a drill bit slightly smaller than the passage way, to be used to press in the new seat. Apply a very, very small amount of a very light lube to the new seat. 3-1 oil or lighter, to help seat it better. Carefully insert the new seat in the passage way with the rings on the seat down toward the carb body. Slowly and carefully force the seat down with the back end of the drill bit. Once it is seated, check to see that it did not flip and the rings are up. *Next check to make sure that the float does not have any liquid in it. *If it does, replace. *If everything looks correct, attach the new needle to the float and install with the float pin centered. It everything is correct, the float should seat level to the carb body, when looking at it upside down. If everything looks good reattach the float bowl, making sure that both the bowl gasket and the nut gasket seal properly. Reinstall on the engine and test unit. Remember to have patience and take your time. Good luck, but I don't think you'll need it.
PS: *On the side of some Tecumseh carbs you will find a plastic cover. *Under this cover will be an idle jet. *Remove it and check to see that the jet is open both horizontally and vertically. *You should be able to push the old float needle wire through the vertical opening.
Needle and seat replacement
Remove the carb, and then remove the float bowl. Check the float bowl jet (which is the bowl screw) and make sure the jets both horizontal and vertical are clean and open. Tip the carb upside down and remove the float pin and float with needle attached. Look in the float needle passage and you should see the red float seat at the bottom of the passage. This is where a #5 crotchet hook would come in handy as you need to remove this seat. If you have no hook, but compressed air, you can blow through the fuel inlet and try to pop the seat out. Put your thumb over the passage to prevent the seat from flying who knows where. No air or hook try bending a stiff paper clip to dig the seat out.
I would either give the carb a good 24 hour soaking or have it ultrasonically cleaned at this time.
With the seat out clean the passage way with carb cleaner. Now you must find a drill bit slightly smaller than the passage way, to be used to press in the new seat. Apply a very, very small amount of a very light lube to the new seat. 3-1 oil or lighter, to help seat it better. Carefully insert the new seat in the passage way with the rings on the seat down toward the carb body. Slowly and carefully force the seat down with the back end of the drill bit. Once it is seated, check to see that it did not flip and the rings are up. *Next check to make sure that the float does not have any liquid in it. *If it does, replace. *If everything looks correct, attach the new needle to the float and install with the float pin centered. It everything is correct, the float should seat level to the carb body, when looking at it upside down. If everything looks good reattach the float bowl, making sure that both the bowl gasket and the nut gasket seal properly. Reinstall on the engine and test unit. Remember to have patience and take your time. Good luck, but I don't think you'll need it.
PS: *On the side of some Tecumseh carbs you will find a plastic cover. *Under this cover will be an idle jet. *Remove it and check to see that the jet is open both horizontally and vertically. *You should be able to push the old float needle wire through the vertical opening.
#3
B
basstracker
B
basstracker
thanks for the reply. I turned the seat over and the float set level like it should but it still kind of spits and sputters. it runs good enough to mow with but its not right. Im not shure it's the carb.Rings should face the carb body. Here's the procedure I recommend.
Needle and seat replacement
Remove the carb, and then remove the float bowl. Check the float bowl jet (which is the bowl screw) and make sure the jets both horizontal and vertical are clean and open. Tip the carb upside down and remove the float pin and float with needle attached. Look in the float needle passage and you should see the red float seat at the bottom of the passage. This is where a #5 crotchet hook would come in handy as you need to remove this seat. If you have no hook, but compressed air, you can blow through the fuel inlet and try to pop the seat out. Put your thumb over the passage to prevent the seat from flying who knows where. No air or hook try bending a stiff paper clip to dig the seat out.
I would either give the carb a good 24 hour soaking or have it ultrasonically cleaned at this time.
With the seat out clean the passage way with carb cleaner. Now you must find a drill bit slightly smaller than the passage way, to be used to press in the new seat. Apply a very, very small amount of a very light lube to the new seat. 3-1 oil or lighter, to help seat it better. Carefully insert the new seat in the passage way with the rings on the seat down toward the carb body. Slowly and carefully force the seat down with the back end of the drill bit. Once it is seated, check to see that it did not flip and the rings are up. *Next check to make sure that the float does not have any liquid in it. *If it does, replace. *If everything looks correct, attach the new needle to the float and install with the float pin centered. It everything is correct, the float should seat level to the carb body, when looking at it upside down. If everything looks good reattach the float bowl, making sure that both the bowl gasket and the nut gasket seal properly. Reinstall on the engine and test unit. Remember to have patience and take your time. Good luck, but I don't think you'll need it.
PS: *On the side of some Tecumseh carbs you will find a plastic cover. *Under this cover will be an idle jet. *Remove it and check to see that the jet is open both horizontally and vertically. *You should be able to push the old float needle wire through the vertical opening.
#4
M
mechanic mark
M
mechanic mark
Post all engine numbers from engine data plate. Absolutely does matter. Check air filter for replacement. Adjust valves per manual specs. after posting numbers.
#5
B
basstracker
all the numbers i could find were on top of motor, briggs and stratton 650 series 190cc j1940
B
basstracker
Post all engine numbers from engine data plate. Absolutely does matter. Check air filter for replacement. Adjust valves per manual specs. after posting numbers.
all the numbers i could find were on top of motor, briggs and stratton 650 series 190cc j1940
#6
R
Rivets
R
Rivets
Look on the plate above the muffler for more numbers. You should have needed these numbers when you got the new needle and seat.
#7
B
basstracker
I carred the carb to the parts store. ill look again. thanks
B
basstracker
Look on the plate above the muffler for more numbers. You should have needed these numbers when you got the new needle and seat.
I carred the carb to the parts store. ill look again. thanks
#8
B
basstracker
I found the numbers 124t02-3773-b1- 07022258
B
basstracker
I carred the carb to the parts store. ill look again. thanks
I found the numbers 124t02-3773-b1- 07022258
#9
R
Rivets
R
Rivets
Going to ask a couple of questions to solve this problem. Did you check and clean the jet which is located in the bowl screw, which holds the bowl to the body? Are you sure the float is level or slightly rich? Are you sure you are running at the proper RPM's? Should be about 3100. Are you sure you didn't scratch the seat when you removed it to flip it over? I rebuild at least two of these carbs every week and if the needle, seat and float are installed correctly in a cleaned carb, it should solve your problem. I suspect you float is not level.
#10
B
basstracker
I did clean jet, it don't have a throdle but its running fast enough to mow, the float is slightly elevated holding carb up side down.
B
basstracker
Going to ask a couple of questions to solve this problem. Did you check and clean the jet which is located in the bowl screw, which holds the bowl to the body? Are you sure the float is level or slightly rich? Are you sure you are running at the proper RPM's? Should be about 3100. Are you sure you didn't scratch the seat when you removed it to flip it over? I rebuild at least two of these carbs every week and if the needle, seat and float are installed correctly in a cleaned carb, it should solve your problem. I suspect you float is not level.
I did clean jet, it don't have a throdle but its running fast enough to mow, the float is slightly elevated holding carb up side down.
#11
M
mechanic mark
Results engine operators manual & parts list, carburetor & carburetor kit is on page 13 of parts list.
http://www.ganino.com/games/Briggs ... Single Cylinder L-Head BRIGGS & STRATTON.pdf repair manual
M
mechanic mark
I found the numbers 124t02-3773-b1- 07022258
Results engine operators manual & parts list, carburetor & carburetor kit is on page 13 of parts list.
http://www.ganino.com/games/Briggs ... Single Cylinder L-Head BRIGGS & STRATTON.pdf repair manual
#12
R
Rivets
R
Rivets
If the float is slightly up, I would say that is contributing to your problem. The float needs to be level or slightly down, when the carb body is upside down. Having it slightly up means you will need more air moving through the venturi to make the engine run correctly.
#13
B
basstracker
the float has no ajustment, theres no ajustments any where on this carb. how do I get it level?
B
basstracker
If the float is slightly up, I would say that is contributing to your problem. The float needs to be level or slightly down, when the carb body is upside down. Having it slightly up means you will need more air moving through the venturi to make the engine run correctly.
the float has no ajustment, theres no ajustments any where on this carb. how do I get it level?
#14
R
Rivets
R
Rivets
I understand that the float on these carbs are not adjustable by the general public. I have a way to adjust them, which I will not publish, but if you don't understand what you are doing and how a carb is built and works, it can result in purchasing new parts and creating a bigger headache. One thing that you can try is to make sure that the seat is fully seated in the carb body, they will stop a few thousands before reaching the bottom of the seat cavity. You stated that you installed the seat wrong and had to remove it. You may have damaged it, as these are designed as a single use part. I don't know what procedure you used to removed or install the seat, but I have a special tool to make sure it is done properly. Sometimes you need to replace the float also. I am not saying that the way you did things is incorrect, but being that I get paid good money to make sure things are done right and the customer is happy, I set my standards higher than the average guy or gal. If I make a mistake on one unit, it will take twenty or more perfect fixes to get my reputation back. Look around, the number of bad reviews on any site far exceed the number of reviews by those who had their problem fixed the first time.
#15
B
basstracker
thanks for the reply. I put the seat in with the back of a drill bit and blew it out with air. I think it was ok. I will see if it will go a little deeper. thanks
B
basstracker
I understand that the float on these carbs are not adjustable by the general public. I have a way to adjust them, which I will not publish, but if you don't understand what you are doing and how a carb is built and works, it can result in purchasing new parts and creating a bigger headache. One thing that you can try is to make sure that the seat is fully seated in the carb body, they will stop a few thousands before reaching the bottom of the seat cavity. You stated that you installed the seat wrong and had to remove it. You may have damaged it, as these are designed as a single use part. I don't know what procedure you used to removed or install the seat, but I have a special tool to make sure it is done properly. Sometimes you need to replace the float also. I am not saying that the way you did things is incorrect, but being that I get paid good money to make sure things are done right and the customer is happy, I set my standards higher than the average guy or gal. If I make a mistake on one unit, it will take twenty or more perfect fixes to get my reputation back. Look around, the number of bad reviews on any site far exceed the number of reviews by those who had their problem fixed the first time.
thanks for the reply. I put the seat in with the back of a drill bit and blew it out with air. I think it was ok. I will see if it will go a little deeper. thanks
#16
B
basstracker
well I put a new carb on today and the mower don't run much better. it helped a little but still don't right. it must have something to do with the fireing?
B
basstracker
thanks for the reply. I put the seat in with the back of a drill bit and blew it out with air. I think it was ok. I will see if it will go a little deeper. thanks
well I put a new carb on today and the mower don't run much better. it helped a little but still don't right. it must have something to do with the fireing?
#17
B
basstracker
It's not the carb what should I check now. thanks
B
basstracker
well I put a new carb on today and the mower don't run much better. it helped a little but still don't right. it must have something to do with the fireing?
It's not the carb what should I check now. thanks