While you wait for answers, we may have found some information which could help you.
Success
Message
Challenge xtreme mc5 7205?
How can I tighten loose blade in my circular saw?
Replacement18 volt. battery?
Bush Replacement Mitre Saw?
Replace faulty switch?
How do I get blade out?
Parts for skill saw?
Part Replacement?
Need spare helical gear?
Table saw not running and motor sparking?
I need to replace the brushes on my circular saw?
Replacement helical gear for powerbase 801745?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix circular saws.