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.
The shim/s are used to adjust crankshaft end play or "float" as I like to call it. Due to casting and machining some blocks will need several and some none. As Racer stated if it didn't have any it doesnt need any unless it was previously disassembled. What made piston go bad?