I have a 1986 BAYLINER capri 2.3 volvo penta and need help. I am new to boats Quacky suggestion will be useful. I have problems at this time, speed boat with the throttle lever up to 3 / 4 of the space and moves well. but they walk very slowly accelerate to walk the entire area around 4 seconds and then be the stick in full throttle down fully and then you can only walk 5 miles or knots. if you stop the march a good time can then progress to cotinuar speed 3 / 4 of space on the handle. I know how to adjust the valves, I do not see an adjustment screw to raise the tree
thank you very much.