If you are refering to the clamp on the Battery & are trying to remove it from the battery:
If you have removed the 10mm nut & bolt, the clamp should be loose enough to wiggle off, if not spread the clamp with a flatblade where the bolt goes thru.
Otherwise there is a Battery Clamp removal tool thru Parts Store that lifts it off the battery
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sorry for the problemIf you will carefully inspect the clamp, you will see where the bolt goes thru, it sandwiches the clamp together. Use a flatblade to pry apart, otherwise use your flatblade & pry up under the clamp to remove from postAs stated, there is also a tool (like a puller) that will also remove
Please be sure to clean ALL WD40 off, prior to reconnection