Have 62515 Hamilton Beach mixer and need to take it apart. Have removed 2 screws and it looks like a plastic plug has been installed over the third. What is the best way to remove this?

SOURCE: change power cord on old Hamilton Beach Mixette

You have to unscrew screws at its bottom and strip away the plastic cover. Does it look like this from below?

http://bpics.rubylane.com/graphics/shops/starvingstudent/12.2L.jpg

SOURCE: Replacement beaters for Hamilton Beach Hand/Stand Mixer Model 64586

Call the factory. they will point you in the right direction. number online!

SOURCE: Hamilton Beach 727W Milkshake maker part wanted

CONTACT HAMILTON BEACH FOR REPLACEMENT PARTS. THEY WILL NORMALLY SELL THEM TO YOU AT A REASONABLE PRICE. YOU CAN GO TO ANY RETAILER THAT SELLS HAMILTON BEACH PRODUCTS AND GET THE ADDRESS FROM THEM. OR YOU MAY BE ABLE TO CONTACT THEM AT A WEB SITE. GOOD LUCK. JLR4

SOURCE: Hamilton Beach Model 27 (antique milkshake blender)

First off, check the supply cord. They usually dry out and the insulation crumbles, particularly at the point where they enter the body or motor. They short out. I've replaced cords on antique stand mixers I own. It can be a tricky operation.
Is the motor seized? Can you turn it by hand? (NOT plugged in, of course.)
If all else fails, send it to me and I'll fix it for a reasonable fee, if it is fixable at all.
dudeboy

SOURCE: Trying to take apart the hamilton beach stand mixer to fix it

There should be a few screws on the underside that will allow you to remove the top. You may have to take the head off the base to do this.