'81(?) Merc 140hp outboard....need help locating manual please.

phearly

Cadet
Joined
Mar 19, 2011
Messages
13
Just bought a used 140 Mercury outboard motor from a guy who said it "ran when he took it off the boat" a few years ago. Said it's been stored in a shed the whole time. I want to get it running but I've noticed at least 3 wires inside the engine have rotted insulation and I am needing to locate the repair manual for it. I've looked at the sticky on this but can't seem to find the right manual. I am wondering if anyone can help? the serial# on the plate is 5742395(that's the whole number..no letters or zeros). Thanks in advance. Here is a pic of it.....
Merc140 Side.jpg
 

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: '81(?) Merc 140hp outboard....need help locating manual please.

phearly;

The Mercury manual you need is 90-86134--4, the -4 being the latest revision as of 1991.

Gerry
 

phearly

Cadet
Joined
Mar 19, 2011
Messages
13
Re: '81(?) Merc 140hp outboard....need help locating manual please.

Thanks guys,

Which one (factory or seloc) do you think would be more helpful for the work I might need to to do to get this thing up & running? This is my 1st foray into boats and outboard motors. I've done car repairs, house repairs, home electronics repairs etc...just haven't gotten into boats until now. I've also got a Johnson 1968 V-100 outboard that came with the boat(1979 Invader tri-hull) that I am going to try to revive. Thanks.
 

carholme

Rear Admiral
Joined
Sep 4, 2010
Messages
4,845
Re: '81(?) Merc 140hp outboard....need help locating manual please.

phearly;

Some people seem to get along fine with the Selocs but I wouldn't use them simply for the mistakes they contain. The number I sent you is the Mercury manual by the people who built the engine.

Gerry
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
28,524
Re: '81(?) Merc 140hp outboard....need help locating manual please.

If that is a 140HP inline six, the last year of manufacturer was 1978, maybe 1979, but no later.
 
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