Jabsco electric bog

[Seastoke]

The water inlet valve is making a squeaking noise , it is only 2 years old . Any ideas before I strip it down.

 

[PaulRainbow]

The water inlet valve is making a squeaking noise , it is only 2 years old . Any ideas before I strip it down.

I take it it's freshwater flush ? If so, the solenoid valve is easy enough to take apart and clean.