Re: Carbs for 85 hp Force
Top carb has a different number because it has a 90 degree fuel fitting instead of a TEE.
Any carb set off any three cylinder Force before Merc got to them will interchange. Just be sure to change all three as a set since they are vented and jetted differently from model to model and year to year.
On one of my 90 hp engines, I am using carbs off a 4 cylinder 120 hp Chrysler. Since the 4 cylinder only used 2 carbs, I needed to get them off two engines. YES! Chrysler did make a 120 with the smaller Tillotsen WB carbs. They had the 1 5/16 venturi as opposed to the 1 5/8 venturi TC carbs which are too large to bolt to your manifold.