Archived from the Tools In Action forum (Makita). This thread is read-only.
Hi, first post so go easy on me! I have a makita plunge saw and recently when I have been cutting the saw has been losing power, the motor is still turning but theres not enough power to cut material. Has anyone else experienced this or have any solutions??
All feedback is greatly appreciated
Nothing with the Makita here, I have a Festool though I’ve heard great things about the Makita. Welcome to the forums. Just out of curiosity, what kind of material are you cutting? Any chance the blade is gummed up with pitch?
Bad brushes, damaged commutator, failing switch. Just a couple things that also cause power loss.
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Or you partially burned out the rotor
Is there any visible arcing? I find it’s usually bad brushes that cause a loss of power at first glance. Brushes are cheap, start there.
If that doesn’t fix it, you’ll have to take it apart presuming it’s out of warranty – if it’s still covered just send it back to Makita.
If the armature is burned out you’ll get smoke, barely enough power to cut anything if not a complete failure to turn after trying for a while. A multimeter will show open circuit across all windings. Check online for common values of resistance, if any are well out of range +- 2-3 counts you have a bad winding.
Check the commutator surface. Does it show signs of burning, is it pitted? Is it out of balance or no longer perfectly aligned face to face?