It is a water cooled rect/reg. A weak impeller will not fill the water passge up internally in the block causing it to overheat and fail. They need a impeller every 2 years no matter how good it pee's
It only got a 12 amp charging system and this is at WOT. You could only use a single bank model (MK-1) and charge 1 battery. The charger will not divert any voltage to additional battery's until main battery reaches 13.6V. I sell the Dual Pro series to my Bass customers as the bigger engine are...
I wouldn't adjust the contacts as they are likely set to a certain height and awaits the pins movement. Dug this up as explains oil circuit...
https://www.thehulltruth.com/boating-forum/851310-just-little-insight-into-oil-side-vro2-oms.html
This is a Ficht and doesn't have Quickstart. They are known on the 60°motors to break the TPS if cables are not set up correctly, especially with a hot foot.