Re: Mercury stiff steering.
Check where the Cables mount to the motor .. to get the best turning that the engine is capable of it will need to be on the mount closest to the piviot point. HOWEVER by doing this you are losing Leverage on the engine ..and guess what it will be even harder to turn. Is this a cable /pully system or a rack and pinion?? I have a Rack and Pinion that was very stiff to turn ,, others here have explaned how to lube them .. some times it works other times it may not. I added a grease zerk to the push pull cables near the engine and put some very runny light gease (mixed it up my self) White lithium and Slick 50 and pumped it into the cables .. its kinda hard to discribe where to put the zerk and I am sure they all look a bit diffrent. I wrapped the part of the cable that was "open " with a bunch of electric tape so that the grease would go toward the steering wheel. I would put a few pumps in and move things around ..then waited a few days and did it again and again and again. Mine is much better than before but not perfect.