From the marineengine.com parts info, an illustration for 85HP Merc shows what I think is the cylinder bleed hose (0.077 I.D.) #17- #20 on the left (which is mounted towards the rear of my engine), and on the right side of the illustration is shown the larger-diameter "balance hose" #21-#25, with reference to connection to an air inlet. This is mounted at the front of the engine, parallel to the fuel lines for the carbs and the small diameter "air inlet" connects from the bottom hose fitting to the lower cowl.
But what does this "balance hose" system do? Is it a crankcase breather system (just gases) or does liquid flow through it?
But what does this "balance hose" system do? Is it a crankcase breather system (just gases) or does liquid flow through it?
