no acceleration,starts hard,need help
Bike starts hard and bogs on accelbcleaned carb,good spark etc...
I had the same problem, turns out the exhaust was plugged.
the previous owner was running with oil in oil tank AND premixed fuel creating quite a carbon deposit in the exhaust and oil. Cleaned it with a wire coat hanger and burned out the rest.
You shoulddefinitely adjust the idle and air mixture screws if your FA50's not running well. Take a look at the carburetor diagram and make sure that the air mixture screw is 1 3/4 turns, as instructed, and that the idle screw is adjusted properly.
Honestly, I wasn't able to figure out how to set the idle to "1500 +/- 150 RPM," so I just ran the bike until warm and then adjusted the screw until it "sounded right" -- whatever sounded like it should be going at.
Also, make sure that the choke cable is completely off when running the bike, and especially while adjusting the idle / air mixture screws.
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