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You might want to siphon several gallons of fuel from the bottom of the fuel tank, into a Jerry can. Let that sit a bit and then siphon the bottom of the Jerry can into a clear container and see if you can get all the water out at one time. Toss some 2 cycle oil into the fuel to color the...

When I hurt my shoulder badly earlier this year, after about 2 weeks it stopped getting better on it's own. I went to a walk-in clinic and they proscribed one of those 6 day steroid packs. That provided much healing, and when I was able to get an appt with an orthopedist 2 weeks later, he...

Tubs are a bit safer than a flusher. Flushers can fall off or get a kink in the hose. You need to watch them closely to make sure they supply water whenever you are running the engine.

It does sound like corroded battery cables. They can corrode even under the insulation. Look for bulges in the cale along it entire length. Make sure the ground cables are good as well.

You can look up the year using the serial number on the maxrules site

Galvanized paint needs to go on bare metal. It works best on metal already galvanized, but needing a touch up. If the trailer is painted, and sandblast is not available, sanding, priming and overcoating is the next best option.

I like to use a tub at the end of the season to give the engine a good flush to get all the salt out.

That PTT panel is pretty well made with heavy copper push button contacts. You might check the wiring as that is the weak spot. To tilt the engine up, push both middle and top buttons together. If the trim limit switch on the outdrive is working (most don't work at this age), the middle...

Tachometers run off stator pulses. The yellow wires come from under the flywheel and carry those stator pulses (a form of AV voltage) to the VR. You might put a voltmeter on the battery terminals when the engine is running and charging. Check for AC voltage at the battery. If you see some...

Motors only retire when their bits fly out new vents in their crankcases.

Does the engine charge? If so, connect it to one of the yellow wires and be done with it. If not, maybe you need a new voltage regulator.

I picked a likely engine model at the crowleymarine web site and looked up your flywheel. They have it fitting 61 different models. However, I am not certain it is the one on your motor, so it needs doublechecking. https://www.crowleymarine.com/mercury/products/8m0053921-flywheel

The tach needs +12VDC, ground and a signal to operate. This power and ground comes from the ign switch. So get out the test light or multimeter and see if she has +12VDC and ground. As for the tach signal, put a multimeter set to AC on the grey wire on the voltage regulator at the motor...

Hang the thermostat in a pan of water on the stove. Stick a thermometer in the water as well. Heat the water and observe the 'stat. It should open at about 140F Or just replace it.....

A 2 bbl 4.3 engine usually produces about 170HP. The 4 bbl 4.3LX produces 205HP. Are there any other differences between the 4.3 and 4.3LX other than carb and intake manifold?

I like the Rustolium rusty metal primer or the Rustolium clean metal primer. These need to be covered with a topcoat of paint, as they are rather soft.

Marine engines operate under more load than automobiles. They therefore require oils that do not thin out as much as automotive oils. The spec for marine engine oil is FCW (Four Cycle Water cooled). I would stick with the proper oil.

White smoke is usually steam. On a cold day, some is to be expected out the exhaust. You should not see much/any on a warm day. The temp of the engine is controlled by the thermostat. If it fails, the engine could start to overheat, causing steam even on a warm day. Thermostats do not last...

Gee, my spark arrestor was a lot more than a screen. It was a stack of aluminum plates, riveted together. I cleaned it every year.

Only use "cold galvanize" paint if the area to be painted is galvanized steel. if it is painted steel, the rust is best removed, the area primed with a good rust resistant primer and a top coat of paint applied.