Take pictures... Make notes. You think of course "I'll remember where and how that goes"... No, you won't!
The only movable inside the carburetor is the float, easily adjusted as follows below.
There's normally no need to remove any of the core plugs... BUT.. if required, carefully cave in the center of the core plug, then pick it out. Use extreme care that you DO NOT damage the carburetor surface that exists under it. After caving it in, I usually create a small hole in it so that I can insert a pointed scribe to flip it out. Installing a core plug is simply a matter of sitting it in position, then flattening it out somewhat with a proper size punch.
That carburetor has brass fixed jet (no adjustable needle valves). Any jet that you can see on the outside portion of the carburetor measures "Air".... a hidden jet installed in a fuel passageway of course measures "Fuel". The sizes are marked on the face of the small jets... and on the sides of the larger long jets. Make a note as to which one goes where... type, size, location. They may look identical... some are, some aren't.
The 1987 88hp has two dual barrel carburetors. Inside each throat, in the top area, near the front, is a small "air bleed" jet (2 to a carb)... the high speed jet is located horizontally in the bottom center portion of the float chamber... way in back of the drain screw, secured via 1/4x20 threads. Carefully clean the high speed jet with a piece of single strand steel wire as solvent and air just doesn't do that job properly.
DO NOT use any kind of sealer on the carburetors gaskets for obvious reasons.
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(Carburetor Float Setting)
(J. Reeves)
With the carburetor body held upside down, the float being viewed from the side, adjust the float so that the free end of the float (the end opposite the hinge pin) is ever so slightly higher (just ever so slightly off level) than the other end. And when viewed from the end, make sure it is not cocked.
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When installing the carburetors, adjust the linkage that connects the two throttle butterflies so that there isn't any play (sync). You want "all" the throttle butterflies to open and close at the same time. You DO NOT want one butterfly closed at idle and one ever so slightly open!
The throttle butterflies should just start to open when the scribe mark on the metal cam is aligned dead center with the throttle roller... not before or after!
