If you are experiencing reduced performance, a burning smell, smoke, sparking, or inconsistent or no power, it’s time to change the brushes. Brushes are a consumable part that need to be changed depending on frequency of use.
Makita Trim Router: Makita RT0701C 1-1/4 HP Compact Router - Power Laminate Trimmers - Amazon.com
Brushes: Amazon.com: RT0700C RT0700CX3 RT0701C Carbon Motor Brushes Compatible with Compact Routers 5 Pairs : Tools & Home Improvement