Need REGULATOR/RECTIFIER PN

[vitrvv]

I have 30ELF Yamaha outboard. It has rectifier only. Is any regulator/rectifier exist for this model?

[boats.net]

Number 7 in this diagram is the rectifier but thats all that is available Yamaha Outboard Parts 1989 30ELF ELECTRIC PARTS (30E) Diagram

[vitrvv]

Thanks for response. I know that any Yamaha catalog does not show regulator for this type of engine.
May be possible modification to use regulator from other Yamaha outboard engine?
Currently rectifier gives up to 16.8V that ok for flooded type of battery but will kill any AGM or GEL battery where max voltage should be 14.6-14.7 V.
It is should be relatively easy to find replacement part if you know max voltage and max current from lighting coil and output voltage and current. I do not have these data for other type of Yamaha outboard engines and can not select proper rectifier/regulator. Is anybody knows or possible to get these data from Yamaha?