I have a power king modified for sale on ebay pics included, label is a 4x12 if you take them apart you can count the winds to the com which is the 4 part I could almost count all 12 coils around the stator, make note of the timing, pull back the brushes and just 2 screws need to be removed to reveal the armature, i called the number on the motor and spoke to a very knowledgeable guy if you need more info give them a call.
https://www.ebay.co.uk/itm/332452342...84.m1558.l2649