Chi conosce questo motore nanniF.L30?

[palve]

C'è qualcuno che sa darmi notizie certe?
Sul manuale leggo, ma non so se è applicabile a questo modello (il manuale è unico per vari modelli):
THERMOSTAT
Farymann Diesel engines are cooled directly by sea water. The raw water never touches the engine block, but circulates only around the replaceable cylinder liner, head and exhaust system. Cooling water jacket around cylinder is con¬structed of a non-corrosive, glass-fibre-reinforced-plastic. Outer wall of cylinder is zinc-plated.
In addition, the Farymann diesel has been built to operate at cooling water temperatures below that at which salts and minerals precipitate in sea water.
No separate fresh water cooling system is needed or recommended.
A thermostat with a setting of 55° C (120° F) is fitted to the engine. Any depositis that appear on the thermostat can be removed with dilute hydrochloric acid. Flush afterwards with fresh water.
Caution: during assembly make sure that the small hole (equipped with a tiny cotter pin) in the fitting plate of the thermostat, which permits water to penetrate even in the closed position, is not obstructed.