I have a friend who has an 89 OMC 4.3 that hasn't been used in about 5 years and he wanted me to check it over for him before he tried taking it out again. I'm not a boat mechanic so I don't know what to service and check. I told him that a minor tune up, check carb,change oil & fuel filter and maybe install a transom kit if anything looked at all bad, lube u joint. Anything else you pro's would look at?<br />Thanks