All the threads on the left side are left-handed (Bass Ackwards)
After you remove the left pedal, left locknut, and cone, you will need to remove the ball races as soon as possible. The left crank arm will come out through the cups, but not with the ball races in place.
If you can find a bike store that caters to the BMX riders, there are some better Astabula style cranks, pedals, and bearing sets available.
Yes, I fix bikes for the kids in the neighborhood....why do you ask?
Edited to add: Beware of over tightening the cones. The cups are all soft steel, but case hardened. If you run them tight, you will crack the case hardening and ruin the cups. If it has a coaster brake, be sure to locktite and tighten the buhjesus out of the fixed cone. (holds the chainring on the crank) The drive pin has some slop in the hole in the chain ring, and thus the chainring can turn just a smidgen on the crank. I have seen that cause the fixed cup to loosen, which tightens the bearing adjustment...took me two bearing sets to figure that one out...fortunatly they are cheap.
Last edited by kevbo; 06-21-08 at 11:34 PM.