When I tilt my Mariner up to load at ramp, carb leak a fairly large amount of fuel out. I cut up 3M oil absorbent pads and stuff them under air box. It keep the fuel/oil mix from running down leg.
I would run motor a few times on muff, a few hot / cold cycles to see if that causes carb bowls to leak.
Around 1984 OMC started rating HP at the prop, before that they rated at power head.
So 130 / 140 HP motors became 115 HP and 115 HP became 90 HP.
Both Merc & OMC did this around the mid 80's.
