<a href=showthread.php?s=&postid=6482746#post6482746 target=_blank>Originally posted</a> by rvitko
The main reason we did it was to speed up production, the 6000 and 6100 use the same drive unit, their are advantages and disadvantages. It is usually quieter and stronger but the pump may vibrate more. If you have one that works- if it ain't broke, don't fix it.