OEM Porter Cable Counterweight for use with 6" backing plate.

Looking to change from your 5" backing plate to a larger 6" size? 

Not a bad idea BUT... dont forget that you have to change your counterweight!

Not changing your counterweight will cause your Porter cable unit to be UNBALANCED which will force it to vibrate more, possible rattle loose, and will not work correctly.

The Porter Cable backing plate and pad are set off to the center of the polishers spindle. The counterweights essential use is to balance the weight of the plate and pad.  The right balance will reduce vibration and prevent the unit from wobbling.

The Porter Cable backing plate and pad are set off to the center of the polishers spindle. The counterweights essential use is to balance the weight of the plate and pad.  The right balance will reduce vibration and prevent the unit from wobbling.

Changing the counterweight:

1. make sure machine is NOT PLUGGED IN
2. remove 5" backing plate
3. behind backing plate you will see counterweight labeled "USE 5 INCH PAD ONLY"
4. remove the 2 screws from the counterweight with a flat head screw driver.
5. set new counterweight labeled "Use6 inch Pad only"
6. insert 2 screws back in and tighten well.
7. use with 6" backing plat only.