First off, that drawing ain't right.
Fuel flow should go...
Tank bottom to separator single banjo.
Separator double banjo (a) to fuel filter in.
Fuel filter out to injection pump in.
Then, injection pump out to separator double banjo (b).
That book drawing only shows one connection to the fuel filter.
Went back and fixed itHmmm, where's the lift pump in that description? And the return to tank line?