1977 1500 Mercury Outboard Motor

W

Wedel

Recruit
Joined
Jul 6, 2011
Messages
1
I have just put a 1977 1500 Mercury outboard motor on a boat. It starts, idles, and runs at full throttle fine. The problem is it bogs through mid range but eventually will run to full throttle. Any clues??
 
C

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,866
Re: 1977 1500 Mercury Outboard Motor

It likely has a case of clogged carbs, especially the idle circuit. Sounds like it is time for a carb cleaning and rebuild.
 
RMasters

RMasters

Seaman
Joined
Jul 2, 2010
Messages
67
Re: 1977 1500 Mercury Outboard Motor

Our '64 Mercury had the same issue when we bought it after sitting for some years.

The only thing I did was buying the Rejuvenite oil (just 1 bottle for 6 gallons) and the Quickleen from Mercury.

It worked wonders. Now we can do full throttle to idle and everything in between without any issues.

Ahoy!
 
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