Re: 150hp.force trim/tilt -repaired kit for $4.00
The big valves with the hex heads are usually the ones that cause the leak down. Once you take them out you have to take them apart. the end where the little needle valve comes off (you will need to pry it off with a wide bladed screwdriver, carefully) Inside is the needle valve with a spring under it, and the o-ring goes around the pin, Mercury part # is 820719. It is some sort of carb seal, but it does the job<br />Greg