Do you have a pic? is it a one piece or a 3 piece crank? If its a 1 piece crank, take off the rear wheel, take the chain off the sprocket. Then, take off the large nut with a pair of water pump pliers. There should be a washer, thats keyed into a slot on the crank. pull that off. ther should be another nut with 2 slots in it. Spin that a few turns with a screwdriver. take it off the rest of the way with your fingers. take out the bearings, and the crank should just slide out. Oh, and the nuts are all left hand threads.
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