Providing there is 12 volts key on power, and a good ground supplied to the tach, the most likely culprit would be a faulty rectifier, from which comes the tachometer signal. Also, it may be a corroded or loose plug-in connection to the control box or key switch harness.
A Mercury outboard water pump is a engine cooling system. A outboard water pump is what blows steam through to get the car cool,
I have a vague recollection that the neutral start switch could be the problem.See "Related Questions" below for more
The 75 hp Mercury outboard will need a starting battery in the 650 CCA range, although, up to 1000 CCA would work just fine.
The 5 hp Mercury outboard requires no special type gear oil. General recommendation is for a GL-5 class lubricant, i.e. hypoid 90w. Most any of the oem, or aftermarket gear lubes, manufactured for outboard use, will work just fine.
It should work. I have a 94 w/o a tach and put a LE version cluster with tach in. Works fine. There should still be a tach wire grouped into the harness plugs. Just unplug your old one and plug in the new one that's it.
The VSS (Vehicle Speed Sensor) is probably bad. Also check the fuses.
It should work ok if the wire for the tach under the hood is connected and I don't remember which one it is.
The Mercury Outboard 60hp E60ELCIA uses a combination of fuel, air, and spark to power its engine. Fuel is injected into the combustion chamber, mixed with air, and ignited by a spark plug to create controlled explosions that drive the pistons. These pistons then turn the crankshaft, which ultimately propels the boat forward in the water.
Tach is driven by a motor signal, speedo is from the trans the sensor is bad on the transmission
you can try 25-1, if it's too smokey, work your way up to 50-1
Bad white wire
The tachometer is fed from the distributor coil. High voltage spikes are filtered on the wire to prevent damage to the electronic display. There is a tach filter attached to the intake manifold. Replace this filter and your tach will work again. Mid-America Motorworks Part #618-561