I've had some issues with slow and sluggish operation.
I did some checking and found out that the bearing in pitcher gets gummed up making it extremely difficult to turn the blades by hand.
I cleaned and lightly oiled the bearing and freed it up.
I can now turn the blades easily by hand.
It now works like a charm.
(HINT) Do not wash the pitcher in the dishwasher this will affect the bearing.
Product or Service Mentioned: Healthmaster Blender.
Reason of review: Bad quality.