What are your recommendations for annual and/or periodic maintenance on the 200 XS. I bought my Allison last Thanksgiving with a 2001 Merc 200 XS on it. It had about 130 hrs on it at the time. Just before I bought it, the previous owner had it "maintained" including new spark plugs, lower unit lube and seals, new water pump, etc. I have put perhaps 30-40 hrs on it since then. Water pressure appears to be good, 5-7 psi at idle, 15+ at higher rpms. Starts and runs great. Temps look normal.
Does the XS require any annual maintenance that you would not normally perform on lets say a Merc 200 EFI or Optimax?