Dear Boat Doc, I have been boating since the age of
14. I’ve always driven sterndrive boats, with a few outboards thrown in along the way. A couple of summers ago, I bought a Yamaha twin jet-drive boat for the reasons most people buy jet boats: no outdrive maintenance, shallow water clearance, etc. I was aware of the negatives of this type of boat, mostly difficulty in slow-speed maneuvering. What I did not expect was the difficulty in using the throttles. The twin throttles are extremely hard to move forward or backward, forcing me to move in large increments unless I punch the throttles gently to get small increments in speed. While I have gotten used to this, it makes it hard to hand over the wheel to my kids, or anyone else. I am wondering if this is normal, or if there is an adjustment that can be made or a lubrication point that I am not aware of. Mario Bienvenue
Hi Mario. They are just like any other cable control. There is a throttle friction adjustment on the back of the throttle-lever housing, accessed by popping out a rubber plug. Try adjusting these screws and see what happens, noting the position of the screw before you begin. You might also disconnect the cables from the jet end — at the thrust deflectors — and move the levers and see what happens. That way, you will be able to tell if it is the throttle cable or the shift cable (aka control cable, which moves the deflector).