Too much pressure??
On a tee I, think 7.5 is too high for cranking test.
If deadheaded, its high but might be OK. I'd still swap it out for one that has the correct max pressure over installing a regulator.
Then see about getting a new diaphram and valves put in the old one (which has the correct spring in it).
From the picture of one I found online, yes the 1781 has the accelerator pump's linkage through the bowl cover.
Definately recheck the float and the needle and seat.
Sometimes floats take on fluid.
Try also setting the float at the low end of the spec, and if there are dry vs. wet specs for the carb, make sure your setting on the appropriate one.
Was your pressure test done with the gage plugged direct in or on a tee?
On a tee I, think 7.5 is too high for cranking test.
If deadheaded, its high but might be OK. I'd still swap it out for one that has the correct max pressure over installing a regulator.
Then see about getting a new diaphram and valves put in the old one (which has the correct spring in it).
From the picture of one I found online, yes the 1781 has the accelerator pump's linkage through the bowl cover.
Definately recheck the float and the needle and seat.
Sometimes floats take on fluid.
Try also setting the float at the low end of the spec, and if there are dry vs. wet specs for the carb, make sure your setting on the appropriate one.
