MAX Rechargeable Dustproof Circular Saw PJ-CS53CDP Main Unit - Junk Item

MAX 18V Cordless Dustproof Circular Saw Body. Operation not confirmed. Since the exterior was in good condition, I purchased it used and used it for site work, but the rotation speed has decreased. The light turns on. This is a junk item. How about for someone who can repair it or for parts? No claims, no returns, no cancellations (3N).
- Manufacturer: MAX
- Product Name: Cordless Dustproof Circular Saw PJ-CS53CDP
- Voltage: DC18
Thank you for looking.