Bad key switch on 1975 merc. 1150 outboard

Product Line Year H.P. Model Number Model Description MERCURY 1978 115 1115628 MERC 115

Mercury Outboard Fuel Pump - Mercury Outboard Forums

forums.iboats.com/Mercury-Outboards/Fuel-Pump

5, 2004 Mercury 225 four-stroke EFI no power to Low Pressure fuel pump. Why please help · Mercury & Mariner Outboards. 13, Mercury 850 (85hp) - Gas pumps through the top carb - Failed fuel pump? ... 1, 1969 7.5 H.P. Mercury (Bad fuel Pump)? ... 1971 · 1972 · 1973 · 1974 · 1975 · 1976 · 1977 · 1978 · 1979 · 1980 · 1981 ...

Fuel Pump Diaphragm replacement Mercury outboard 110 ...

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Jun 22, 2012 - Uploaded by Brad Clark
My last test run of this motor lead me to believe I had fuel pumpissues...so in ... Mercury 9.8 h.p. 110 Outboard Motor WaterPump Repair and ...

How to remove the lower unit on a Mercury outboard motor ...

Red is Battery +
Red/purple is ignition
Yellow/red is startermotor
Black/yellow is motor kill
Black is ground

To have ignition, black/yellow wire must be disconnected
On is red/purple on bat+
To start Yellow/red on batt+
To kill: black/yellow on ground

I have a 25 hp merc outboard that starts right up but idles high then low and when running it just dies . Is it a choke problem?

its on the ignition key ! as you turn it on to first position you then push the key in then as it starts let go and with the control lever on a slight high tickover you mite have to dab the choke a couple of times till it ticks over ! dont over choke or you will flood the plugs ! less is best and just let it warm up before setting off !

Hello there
here is a good place to start ok Outboard (wiring A Tachometer To An Outboard, Mercury Outboard Float)
merc outboard motors mercury outboard ... diagram of mariner outboard motors johnson outboard fuel problems ... johnson outboard motors ebay 1996 115 hp mariner outboard

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There is a switch in the control box that locks out the start unless you are in neutral. Open the box and put in a new switch,this is a safty device to keep it from starting in forward and throwing you out of the boat. Jim OMC retired Mech

You may have enough room for a wrench. I have an old ignition set of small wrenches and those are slim. There is also a fitting called a crowsfoot which is thick like a wrench but short and fits on a rachet extension. The 1/4" drive set of sockets are usually shorter than 3/8th. If you have a camera, take pictures and go to Sears with it and buy something to work.

it may be your neutral safety switch. Try it again but this time turn the key with one hand and wiggle the throttle/shifter lever at the same time. My 25 johnson does this, but usually I can wiggle the shifter and she'll turn over. Hope this helps.