Hello and thank you for viewing my post.
I have a Snapper mower with a 675 series Briggs and Stratton engine. I hope these are the needed numbers
Model Number P2167520B 21" Walk Behind
Engine Family 9BSXS.1901VH 278643
Engine 126T02-0267-B1 0902 1157
EPA 278643
I inherited the mower from my sister. It is 5 years old and did not receive regular maintenance. The mower stopped maintaining a constant speed and would die after about 15 minutes so I tried to tune it up to get it working. I know nothing about small engines other than what I learned in the process of trying to get this mower to work properly. Here is what I have done:
Replaced the spark plug and adjusted the gap to factory specifications
Added oil (I did not change the oil and I'm not sure how)
Replaced the pre-filter and air filter
Replaced a spring and trimmed a different spring that move the throttle properly? (not sure if I'm describing this right)
Removed the carburetor cup and cleaned that and the nut with compressed air and carburetor cleaner, then blew compressed air and sprayed carburetor cleaner into the carburetor.
Removed the fuel line and checked it for clogs. I did not clean it
Here are some other things about the engine:
I did not see a carburetor adjustment screw
There is no primer
There is no fuel filter
The gas cap does not have a hole in it
I replaced the spark plug. Then, after every tune-up step I would try to mow again. The air filter made zero difference. I adjusted the springs because the throttle lever near the handle was not changing the engine speed. As near as I can tell the lever is now behaving the way it should. However, I didn't know what I was doing so that is a potential issue. At first it appeared to be the fix and the throttle increased/decreased the engine speed. I was able to mow for about 5 minutes and then the engine died. Then I tried the carburetor. The mower hasn't worked since. I can get it to start if I leave it alone for a while but it barely idles and then dies. While attempting to idle it blows out a lot of smoke. I made sure there is a spark.
My guess is that there is a fuel/air mixture problem. HELP!!! Any suggestions are appreciated.
I have a Snapper mower with a 675 series Briggs and Stratton engine. I hope these are the needed numbers
Model Number P2167520B 21" Walk Behind
Engine Family 9BSXS.1901VH 278643
Engine 126T02-0267-B1 0902 1157
EPA 278643
I inherited the mower from my sister. It is 5 years old and did not receive regular maintenance. The mower stopped maintaining a constant speed and would die after about 15 minutes so I tried to tune it up to get it working. I know nothing about small engines other than what I learned in the process of trying to get this mower to work properly. Here is what I have done:
Replaced the spark plug and adjusted the gap to factory specifications
Added oil (I did not change the oil and I'm not sure how)
Replaced the pre-filter and air filter
Replaced a spring and trimmed a different spring that move the throttle properly? (not sure if I'm describing this right)
Removed the carburetor cup and cleaned that and the nut with compressed air and carburetor cleaner, then blew compressed air and sprayed carburetor cleaner into the carburetor.
Removed the fuel line and checked it for clogs. I did not clean it
Here are some other things about the engine:
I did not see a carburetor adjustment screw
There is no primer
There is no fuel filter
The gas cap does not have a hole in it
I replaced the spark plug. Then, after every tune-up step I would try to mow again. The air filter made zero difference. I adjusted the springs because the throttle lever near the handle was not changing the engine speed. As near as I can tell the lever is now behaving the way it should. However, I didn't know what I was doing so that is a potential issue. At first it appeared to be the fix and the throttle increased/decreased the engine speed. I was able to mow for about 5 minutes and then the engine died. Then I tried the carburetor. The mower hasn't worked since. I can get it to start if I leave it alone for a while but it barely idles and then dies. While attempting to idle it blows out a lot of smoke. I made sure there is a spark.
My guess is that there is a fuel/air mixture problem. HELP!!! Any suggestions are appreciated.
Last edited: