Merc 4.5

martyh

Petty Officer 3rd Class
Joined
Jul 12, 2006
Messages
93
Hey Gang, my brother purchased a 12? boat over the weekend and it has, what appears to be a 1975 Mercury 4.5hp (#4111184) on it. Not knowing anything about the Merc?s, I got it started and it makes a clicking noise while idling in neutral and I don?t see it peeing water from anywhere. It was submerged in water, because I couldn?t find the water intake port, and I only ran it for just a few seconds. Any ideas where or if it has one?

I bought a Clymer manual today and it does not go into detail on the cooling system route. I did find that the intake port was under the anticavitation plate, but no luck on an exit port.

Also, I noticed that the shift lever only operates the shift shaft one direction. It?s like it will only go into one direction of gear. I plan to change the water pump and service the lower unit, just thought I would ask for any insight on the issues

Thanks in advance
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: Merc 4.5

When reassembing the engine have both in the same gear, it sounds like someone else may have had the unit off and not realined when assembling the thing
 
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