Hi: I would depress the spindle lock, and use an open end wrench to loosen the collet holding the bit. The use of channel locks, pliers etc, may strip the collet nut.
You can call Sears parts depot and give them the model number and serial number and they will sell you the proper wrench/wrenches. They can also supply a copy of the parts and operators manual, for a nominal sum. Hope this helps.. Woodnut65
You can call Sears parts depot and give them the model number and serial number and they will sell you the proper wrench/wrenches. They can also supply a copy of the parts and operators manual, for a nominal sum. Hope this helps.. Woodnut65