The engine has 900 hours on it and I hope that the actual pressure isn't an issue.
Actually converting from what gauge shows in kg/cm^2 to psi I get between 30 and 60 psi, may be up to 80 psi occasionally. The "green range" is between 60 and 120 psi, and the arrow is not usually higher than just above 60.
The gauge is electric, so it may be the gauge, I suppose.
So, what is the normal oil pressure range for these engines?