In most cases, an incorrectly assembled blender just won’t work or won’t work well, but sometimes, loose parts could fly out or you could damage the blender.
If you do use a blender for making paper or some other non-food purpose, be aware that it may permanently damage the blender. Use a separate, inexpensive blender that you won’t mind losing.
Smaller chunks will blend more easily and much quicker than uncut fruit. Make sure the pieces of food you’re blending are at least small enough to fit into the bottom part of your blender.
Add a little liquid at a time, then blend and see if the consistency has improved. If you add to much liquid at once, your smoothie could quickly become a thin soup.
Be careful not to get any water in the motorized base unit of the blender during the cleaning process.
These dirty streak marks on the inside of the carafe are often left by minerals found in hard water.
Make sure the blender has ample time to dry, and reassemble the blender with the rubber gasket or seal on the correct side of the blade assembly. You don’t have to do this every time you use the blender. If you use the blender daily or almost daily, give the blender a thorough cleaning monthly.
If the blades still do not turn, it’s probably either the switch or the motor. If the cutter shaft sticks, remove the jug, turn it upside down, and spray a lubricant (like WD-40) over the blades.
Check under the carafe unit periodically to make sure that the little tabs at the base are all intact. If one or more are broken then you will need to replace the carafe. Replace a broken or cracked pitcher. Most manufacturers offer replacements for sale.
If you do not already have a replacement switch, contact the manufacturer and ask them to send you a replacement switch. Or ask the manufacturer to suggest a store to purchase a switch from.
