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Briggs and Stratton engine sputter


niceguy4u36's Avatar
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Join Date: Apr 2008
Posts: 68
NY

07-16-11, 11:33 AM   #1  
Briggs and Stratton engine sputter

I have a walk behind craftsman mower with a B&S550 series engine and today when mowing the engine started to sputter, it never died but I stopped mowing because of this. If anyone can give me some ideas as to what might be causing the problem it would be appreciated. The mower is about 3 1/2 years old.

Thank you,
niceguy4u36

 
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geogrubb's Avatar
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MO

07-16-11, 11:51 AM   #2  
If it was sputtering it could be water in the gas, if it was reving up and down the carb needs attention. Post the engine model, type and code usually found stamped in the metal shroud just above the spark plug so we know wheather you have a bowl or diaphram carb. Have a good one. Geo

 
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07-16-11, 11:59 AM   #3  
Model 10T802 Type 1095B1 and Code 07112055

Hope this helps

 
geogrubb's Avatar
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07-16-11, 03:19 PM   #4  
First make sure there is not water in the gas, if it is reving up and down like it wants to die;
You need to install a new diaphram kit, it is Briggs part # 795083 or old # 495770 also Lowe's has a kit #5083 which has the same parts.
Here we go;

Remove air cleaner, there are 2 bolts that hold things together, one on the front of the tank 3/8" and one into the block 1/2", remove these bolts, now "slowly" slide the carb/tank off the intake tube and breather tube, now tilt the tank in to release the throttle linkage and waalaa the carb/tank is removed. Check the intake tube to see if the O ring seal and plastic retainer are still on the intake tube, if so remove them and re-install them into the carb. Remove the 5 screws from the carb/tank remove carb(don't loose the spring) now spray all holes, cracks and crevases in both the carb and tank surface with brake parts cleaner, remove the main screen(looks like a thimble), now with a small screwdriver pry out the main jet(carefully) and clean it, check the O ring on the main jet for damage, if it is damaged it must be replaced, reinstall the jet, it can be difficult some times to get it to snap back in place(I use the rounded end of a screwdriver handle). Remove and clean the fuel pickup stem(not necessary if the fuel tank was clean). Clean any junk/rust from the tank. Install the diaphram on the tank then the gasket(no goo or sealer) now carefully replace the carb(the spring will try to misalign the diaphram), tighten all screws a little at a time so as not to crimp the diaphram until they are all tight. Install the carb/tank in reverse order and you are done. If I missed something one of the real mechanics will correct me. Have a good one. Geo

 
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