While troubleshooting my boat (as written in earlier post), suddenly I lost all mechanical advance in the distributor. In other words, the engine runs at 10 BTDC at 750 RPM just the same as at 3,000 RPM.

I opened the cap and attempted to diagnose the problem, assuming there was some centrifugal weights or springs (based on what I read on the Internet). However, there doesn't appear to be any sort of advance system implemented.

Am I missing something, or is this done in the module somehow? I can't understand how it could be done by the module because it isn't specified and it certainly doesn't tie out to a computer as with an EFI engine, etc.

Thank you in advance for any ideas!
-Rusten