Purchased this saw last year on Ebay (so no warranty paperwork) and it is indescribably better than my old unit, which would barely cut a few 2 x 4's, even with new lithium ion batteries ( the same can be said about my new hacksaw).
I went to change the blade again, pushed down on the Spindle Lock Button, removed the old blade and when trying to tighten the new blade it only semi engages. Just for fun, I installed the battery, pulled the trigger and...nothing. The local repair shop said it may cost more to look at it than it is worth. I began to tear it apart but thought that I might ask you fine folks if this has ever happened to you. I have a service parts list 54-40-2530 open on another tab and I am not sure which parts I may need to replace.