ALL ADJUSTMENTS SHOULD BE MADE WITH THE MACHINE UNPLUGGED FROM POWER.
If your Chuck open and close operation is sticking or not fully engaging the valve you most likely have a dirty Chuck. You should never clean your chuck with anything that could leave a residue. Products like WD-40 and Brake Cleaner are extremely bad to use on your Chuck. You can use Automatic Transmission Fluid. For best results, remove your Chuck and soak it overnight in a bucket of ATF. If you Chuck is still sticking after that you will need to use the provided disassembly tool and take your Chuck apart to fully clean it. Clean the parts of the Chuck with Denatured Alcohol and then during re-assembly use ATF to help and provide lubrication.
Avoid using a hammer on your Chuck! All your Chuck parts are hardened steel and have very tight tolerances. That will make them difficult to slide parts on or off, so have patients when working with it. There are also marks for lining things up when reassembling your Chuck. You can find step by step instructions in the current SVSII Deluxe Manual and on this website.
While your Chuck is apart, examine the Chuck Balls and the ramps the Balls move through. If the balls appear to have flat spots, replace them. If the ramps show wear tracks you may need to replace the Chuck. Sometimes, you can replace the balls to solve the issue for the short term, but the balls will wear quickly if the ramps are worn. The best solution is to replace the Chuck at that point.
If you have any questions in regards to chuck performance, or if you need a replacement chuck, contact;
Kwik-Way Tech Services or Sales at 800-553-5953.