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I need to know if a 1975 vintage mercury 20 hp lower unit would fit my 72' model 200 20hp power head.. I have checked ser# and they list as 72 and 75 both 20 hp. I assume the 75 is a model 200 also. I dont know anymore details regarding the 1975 model except they list it as a 20hp. thanks for...
This old motor hasn't been run for about 11 years or so. I tuned it up with a new impeller and plugs and fuel pump. It runs hi speed just dandy but doesn't want to idle slow enough for trolling. I took off the flywheel and reset the points which looked brand new to .02. anyone have any...
I have found two... one for $200. seller says the lower unit gears are ok, has been looked at..but would be best to put in a new seal kit?? not sure if I could do that or not.. skills level for me is routine maintenance. Says the impeller is new. How difficult is a lower unit seal kit to...
There are small pieces of hard black rubber in water expelled from the cooling impeller water pump. How difficult is it to replace the impeller in these engines.. Or what level of mechanical experience does one need to complete it? Ive worked on small engines, never a rebuild though, and never...
