Please, can anyone help me?? I need the repair manuals for a B&S 9L902 0221 E1 and B&S 123k02 0197 E1, I have this two mowers and they don't start anymore, please guys help me, I really apreciate your help, thank you:(

I have never run across Briggs service manuals online except for purchasing. Most any Briggs dealer will have them, or be able to get them for you.

Yu may contact to Michael Holt. Perhaps can help. Good luck holtmichael71@live.com

Post the symtoms of the mower and someone will fix them for you. Lets start with the 9L902 0221. I think this one has the plastic carb sitting on the gas tank. If it has spark.
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. 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) with a small screwdriver pry out the main jet(carefully) and clean it, 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. 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

Thank you for your help, I'll work on it this weekend hope everything goes well thank you

Geo thank you very much, I just finish working on the 9L902 and it's working good I just have a question, I'm saw blue smoke coming out from it, I just runned it for like 30 seconds, do you think it will go away if I let it run more time???

Tomorrow I'll work on the other engine 123k02 0197 E1, this one starts and it died after 3 seconds, it's like it run with the gas that got when I pressed the primer, if I don't push the primer 3 times or more it doesn't start, what do you think it can be???
I really apreciate your help, thank you

For the 123K02 0197 I think the bowl nut is the main jet so;
Here we go;
Remove the air cleaner and the 3 screws holding the housing, slide the housing off the breather tube, check the gasket between the housing and carb, if it is damaged very much it must be replaced or the primer will not work properly, now;

Clamp off the fuel line, remove the carb bowl(careful with the bowl gasket), release the clamp to see if you have good fuel flow to the carb, raise the float to see that it shuts off the flow with minimal pressure, clean the junk from the bowl(if there is a lot of gritty specks you might want to clean the tank and replace the fuel line), clean the bowl nut, 2 holes close to the bottom and up through the center, spray all holes, cracks and crevases with brake parts cleaner, reassemble and you should be good to go. If this didn't work it will be probably be necessary to remove the carb and soak it. If I missed something one of the real mechanics will post to help further. Have a good one. Geo

Geo thank you very much, I just finish working on the 9L902 and it's working good I just have a question, I'm saw blue smoke coming out from it, I just runned it for like 30 seconds, do you think it will go away if I let it run more time???



Let it run and the smoke will clear up unless it has other issues, the smoke is from oil that has seeped past the rings probably while it was tilted towards the spark plug or carb for some reason. Have a good one. Geo