Power Tool Care and Maintenance 101
This article suggests guidelines for power tool care and maintenance. It also describes information tools available at eReplacementParts.com.
I have a Makita 18v cordless circular saw that sometimes doesn't start when I pull the trigger. I shake it around a little bit and then sometimes it starts without much power, shake it around a little more until it operates normally. It's independent of which battery I use and I do make sure it's seated tightly. Any ideas on how to diagnose and repair?
U Shud check your motor brushes,possibly be short and is making intermittent contact wit the armature,if they are you should change them and see if that works