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    Cost estimate please on new impeller

    Thanks for the help. I am waiting for a repair manual but how much would a new impeller in the water pump cost (materials and labor) at a repair shop? thanks again. I build hot rod Fords and this Mercury 4.5 HP looks complicated. I have enough stuff to trip over on the shop floor
  2. F

    Mercury 4.5 no cooling problem

    I have an older (90,s) Mercury 4.5 HP that does not circulate for cooling. Has been sitting in garage for 5 years. A little Mistery Oil down the output? Where does the water enter the cooling system? I stuck a hose against the output tube and the water came out around the propeller.Thanks
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