Riviera #2807 dual tank fuel system

[riviera]

Have a 1986 #2807 Riviera with factory A/C. The manual shows a fuel system that has separate shutoff valves for each tank. These valves are accessible from under the step leading into the forward cabin. That is not the way my boat is configured. I am unable to locate any valves.
I have seen earlier Riviera models that are setup as per manual. Wondering if Carver made a change for later models or if the fact that I have A/C may be the reason mine is different.
Will appreciate any assistance.

 

[Gregory S]

Why would AC have anything to do with the fuel system??????

 

[riviera]

The A/C is situated in an area which would not allow access to the fittings on the valves.

 

[awboater]

My fuel shut off valves are located at the tank supply line fitting.

Also the fuel system on my boat is not "plumbed" as shown in the manual, as the manual indicates cross-tank feed lines, and I have none.

 

[riviera]

Thanks to awboater for your response, Like yours, mine is also not as shown in the manual. Unlike yours, my boat does not have any shutoff valves.just straight plumbing to each engine from the adjacent tank.