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I have a SD 217 I/O with the 5.0 Mercruiser and the access to the engine bay is really limited. I would like to hear from someone that has the same engine/deck configuration that does some of their own service work. It looks like the SD 237 has about the same engine access. I have serviced and done most all repairs on my vehicles but when I look at the access on the boat I panic. The spark plugs, starter and or starter cable would really be challenge. Might have to separate the deck from the hull.
Love the boat and it has been trouble free for the most part. I usually have a marine service guy do the winterizing at which time they change the oil and filter. The boat is in the water all year but I pull it out in the spring to clean and service the lower unit. I know the time will come when I will have to deal with some issues other than the regular service.