Crank shaft repair tools, removing peddles and crankshaft caps for cleaning and inspection
Those look like standard three piece cranks. You need a special drank removal tool. The one made by Park Tools for pulling square taper cranks should work, CCP-22, they are about $15 at your local bike shop (LBS) or online. If you have Octalink or spline drive cranks they have a tool for that too.
The cranks are usually held in place with a 14 or 15 mm bolt or nut on square taper bottom brackets and you can use a regular ratchet and socket to remove these. Once removed, you thread in the crank removal tool (mentioned above) and then turn the handle until the crank comes off (this is very tight and takes a lot of "elbow grease" to turn the tool handle).
To remove your pedals, you can use a 15mm open end/box end wrench to remove them. Keep in mind that pedals thread into the cranks in the same direction on both sides, so in other words one side is reverse threaded (this has always been the non-drive side crank).
SOURCE: freewheel spins both ways cant peddle no were how
The freewheel has a ratchet pawl (an internal, spring loaded lever) that would normally engage gear teeth in one direction and click over them in the other direction. This is just like the action of a ratchet wrench. You might have a broken spring or broken pawl - in which case you will have to replace the freewheel---- Or it might just be dirty. Spray some WD 40 inside it (spray through the small gap between the round part that moves and the round part that doesn't. If that doesn't work, you'll have to replace it.
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