K-301 Backfiring
I’m trying to get one of my 129s running. I’m not sure how long it has been since it last ran. When I first tried to start it, it just turned over but didn’t try to start. I went to cut grass, and tried to start it again after I was done. Now it was backfiring through the carb at first. I let it sit a few minutes, tried again and not it was backfiring through the exhaust.
What would cause this? My dad thought maybe the timing was off.
There was a stuck valve, I was able to free it up. I also sanded the points, but did not adjust them. I’m pretty sure the carb is adjusted right, or at least close enough for it to run.
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125, 126, 147, 129, 149 x 2, 1450, 882, 1810, 1320, 1440, 2135, 2 129’s for parts/project, 1950 Farmall Cub
38" LT mower deck, 4 42" triangle mower decks, 2 44A mower decks, 2 50C mower decks, 42” GT deck, 3 42" snow/dirt blades, 42" landscape rake, #4 cart
     
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