GMC 2300w circular saw won't start

[gregwed1]

Have had this GMC circ saw for a few years but never used except to test it when new. Now went to use it and when pressing start button it clicks and spins the blade a few turns but won't keep going. I removed all the covers and ensured everything was clean and free of dust, insects, etc. all very clean and no sign of anything. Took out the brushes and they look ok.
Any clues?
Cheers - Greg

[TermiMonster]

Sounds like the brushes might be sticking. Can't be sure, obviously, but I would check that area first.
TM