How many hours before rebuild on a 502 MAG?
#2
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have seen 502mags with over 400 hrs without rebuilds , hours don' mean alot its how those hours were put on the engines. the hour meters run as soon as the key is turned. See if you can get a mercursier tester, it will tell you the history of how the was operated if its a efi engine. either way do compression and leakdown checks
#3
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Those Merc. testers are wonderful. They tell you so much. But there are a couple to choose from rangeing up to $1200(that I have seen). I had that one put on my motor and now I think I might want to invest that much money for it. Also any big Merc dealer/service center should have one to use.
I believe I saw them avertised on www.sterndrives.com
I believe I saw them avertised on www.sterndrives.com
#5
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I have friends with 700+ hours and still going strong,,,, I have a friend with a 454 that was over 1000 when he sold it and was still going strong........It all depends on how it was taken care of.
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