Ninja blenders are all the rage. They’re convenient, they’re powerful, and they make quick work of crushing ice cubes, blending smoothies, or whipping up a batch of pesto sauce in seconds flat.
But like any blender, they can have their problems. One common issue is that the Ninja blender lid won’t lock on to the pitcher.
This can be a nuisance, but it can also present a safety hazard.
Luckily, there are several ways to solve the problem.
Ninja Blender Lid Won’t Lock – 5 Reasons And How To Fix Them
1. The Blade Assembly Is Installed Wrong
Ninja blender lid won’t go on? If you’ve been using your Ninja blender for a while without having this issue, then you may simply have accidentally installed the blade assembly backward.
In order to insert it correctly, squeeze around the rubber gasket with your thumb and forefinger and then press down on top of the blade assembly until it clicks into place.
Some blenders use 2 prongs instead of a click; these should face up toward the back of the pitcher when inserted properly.
Fully twist the blade assembly clockwise so that it locks into place points directly downward from inside the pitcher.
2. The Blade Assembly Is Cracked Or Worn
If your blender seems to be working fine, but the blade assembly still won’t lock into place, then it’s possible that the rubber gasket has worn down over time until it no longer fits snugly enough for the lid to close properly.
The good news is that this can easily be replaced with a new one by purchasing a replacement kit. If you choose not to do this, however, then you may try using a rubber band around the lip of the jar and under where its cap locks in place.
This solution provides just enough slack so that the blade assembly can fit more securely on top of it without causing damage to the blender.
3. There’s Still Something In The Jar
This issue is most common if you’ve just finished blending something and haven’t had time to clean out the jar yet.
To avoid this problem in the future, always scrub your jar thoroughly after each use or at least rinse it with warm water until there are no traces of whatever you made left clinging to its sides.
4. Your Blades Are Bent Out Of Shape
If your blades seem to be working fine but still aren’t able to lock into place properly, then it’s possible that they’re bent or otherwise distorted from an impact.
In this case, you have a few options. First, try removing the blade assembly again and gently bending them back by hand.
If that doesn’t work, then you may want to try trimming off the bent part with a pair of scissors or small pliers so that they’re straight again.
If the blades are worn down significantly, then it might be time for a new blade assembly instead.
5. You Dropped Your Blender and Bent Something Out of Place
This is perhaps the most complicated fix for Ninja blender lid won’t close issue since you’ll need to disassemble your blender down to its base components.
You can either read through the instructions in your owner’s manual carefully and follow them one by one or search online for instructions on how to do it yourself if yours isn’t available.
If you take this path, then the first response of your Ninja lid won’t lock will be to remove and empty out the jar.
Then you’ll need to unscrew all of the visible screws on its base before prying off any plastic covers that might be in your way.
You may also find it helpful to lay down a towel underneath your machine so that if something does fall or get knocked loose, it doesn’t cause damage to anything else beneath it on your countertop.
Once you’ve successfully removed everything under the hood, check for any bent or broken parts like the pins holding it together or a ridged ring around where the blades slide in place.
If all else fails, then try searching online for how to replace those specific parts on your specific machine.
As you can see, these common problems that prevent Ninja blender lids from locking in place are all relatively simple to solve by either replacing the part or fixing it yourself.
If none of these work for you, however, then it might be best to purchase a replacement jar because the issue might be more serious than just inconvenience.
Related Post: How To Turn On A Ninja Blender
My Ninja Blender Lid Won’t Lock – Wrap Up
So there you have it – 5 easy fixes for ‘why won’t my Ninja blender lock?’.
If none of these work, then perhaps a new Ninja blender jar lid is in order.
The good news here is that replacement lids are easy to find and relatively inexpensive. A quick online search will show several available options for sale from different retailers.