I own a US41, and everyt time I took it to the field, it would flood and never fire. So I took the plug out, spin it over to clear the excess fuel, put new plug in, and with a starter it would start.... but never started by hand. It now sits on a shelf... this is the second one I owned and both were hit or miss on starting. I believe its weak magnets in the flywheel causing the magneto to not produce a strong enough spark.
ORIGINAL: comanche260c
Good Morning I just bought a byron p51 with us41 and it wont start .I was told it was serviced by dick barrett before he passed. It hasno choke so i choke it with my thumb. I took it apart and everything looks good and soaked it in carb cleaner.....when i choke with thumb i will get a few pops but wont fire. high needle was 3/4 open low 2 turns.I tryed 2 1/2on both also and nothing......any ideas ???????