I have a new Bennington 20' pontoon w/ 90 HP Merc 4-stroke. The boat steers extremely hard to the left, if I let go of the wheel the boat pulls hard to the right. Standing behind the engine the trailing edge of the trim tab is adjusted to the left. Is the trim tab adjusted to the wrong side? Dealer is long way from where I am, hasn't been much help by phone. Any help would be appreciated.
have a 25, Crest Classic, with a 90HP Merc 2 Stroke. I had the same problem as you, I found that having the trim tab set dead center, gives me the best turning effort, with no pulling.
Learner48,Take your socket wrench with you, adjust it, go play a little bit, and adjust agian. It took me about 4 tries, to find the best postion for it. The local sand bar, was great for stopping and adjusting it.