Re: Yamaha I/O
Hi. I hope the good Capt has a sender for you. As for the installation, it is not a big deal if you are at all handy with wrenches and screw drivers. If you look at the inside of the transom directly behind the engine and just below the steering mechanism, you'll see the speedometer hose and a jacketed wire cable exiting through a plate. The plate is held by two bolts. If you can see the plate and if you can get a wrench on the bolts, you can install the new sender. The plate clamps rubber-like tapered washers around the speedo hose and cable so that you don't get leaks around those items. You have to remove that plate and remove the "washer" from the electric cable. The cable will be pulled through the transom from the outside once you unscrew the sender from the drive. You'll have to turn the drive to the extreme port side so that you can reach inside the gimbal housing to remove a clamp holding the sender cable --small hands and a small wrench help out on this one but you can do it even if ham fisted. Once the clamp is removed and the sender is free, just pull the cable through the transom. Reverse the procedure and connect the new sender to the harness -- match the color codes on the wires and the connectors are also keyed (hard to make a mistake here). Now -- there is a procedure to "initalize" the sender to the computer. If you get a sender and decide to do the job yourself, post again and I'll send you the pages from the manual that tell you how to do the initialization. Capt Ken may know how to do it but I doubt that you will find any marina mechanic that knows how or who would bother to get the info to do so. Good luck and keep in contact with the Capt -- if you keep the Yamaha setup (and it is a great setup once running and maintained) you will need him for parts and advice.
