I was unable to find serial number DC133106. Serial numbers usually start with a single letter or no letter at all and just have numbers.
A serial number beginning with D or C would be a 3-cylinder 50HP model, 1990 or newer.
I presume you have the 4-cylinder model. The 4-cylinder models...
The tilt tube is simply a piece of threaded pipe. It is removeable, as are the two transom clamp brackets. PTTs changed over the years, so it is hard to know what you have.
If there are identical, I would expect that you would be able to swap the PTT units, without removing the top (or bottom) motor mounts. If not, the motors are not identical, and I would suggest you post some pictures.
Gee, I wish it were so. A lot of people think the earth is flat. Some that fly on airplanes. Luckily most of the people in the US are intelligent, reasonable, good people. I would hope the flat earth movement would be OBE.
You would be well served to follow Racerone's suggestion. Fixing a gearcase takes special tools and knowledge. It is best to make sure it needs it, and to price a SEI gearcase replacement.
Gee, what does the repower cost? Remanufactured I/O engines are pretty cheap. I/O engines should last 20 years if raw water cooled in salt water. The manifolds and risers rot out after 10 years or so.
Usually FWC systems on V engines cool the risers with raw water. If you are considering...
My neighbor has a Yammie 150 and hydraulic steering. Fluid is added to the helm, via a cap in the fiberglass dashboard, left of the steering wheel. Unscrew the cap, screw in the hydraulic fluid hose (like a gear lube pump hose), and then connect the hose to a qt of hydraulic fluid. It helps...
A high RPM at idle will prevent the motor from coming out of gear as well. She should idle at 900RPM or less.
Mercs usually have an idle stop setting on the throttle arm. When in neutral, the throttle should be pushed up against the throttle stop. You might check that and adjust the throttle...
MerCruiser impellers will cause overheat at idle, if the bottom of them is damaged. You state that you replace it every year, so I will assume that is not the issue. Do you replace the wear plate, and the two gaskets as well? If the wearplate has scratches or the gaskets leak, that can cause...
What do the top of the risers, under the rubber sleeve look like? That is usually an indicator of how much the manifolds and risers are corroded.
Picture 2 shows a lot more rust that I thought I would see, especially on a freshwater boat. Was she used in the salt, before you bought it? She...
This should be reposted in the MerCruiser forum. You might look for a wiring diagram for your motor. They should be available on the net. Although the starter wiring probably didn't change much or at all over the years, it would be best to get a diagram for the 3.0 as close to your year as...
Controls are not hard to put in. If you have ever changed a throttle or shift cable, you have already done it, or most of it.
Different engines use different spots within the control to attach the cables, so do not lose the instructions.
Both controls you cited should work. Make sure the...
Gee, mix in a bit less hardener and let the resin soak into the plywood for longer. I replaced my transom on a nice warm day and mixed maybe 3/4 of the hardener usually called for. It took hours to harden, but it soaked into the plywood very well.
That begs the question....is the computer wiring the same between EFI and Optimax? In not, it may never work right. If the wiring is the same, update of the sw should be able to fix it, one would think.
Although I do not know it to be a fact, manufacturers usually allow for SW updates, as...
Gee, our Canadian friend was not the only one complaining about the gear oil prices.
BTW Amazon has Valvoline marine gear oil for $10.21/qt. Not bad if you can get free shipping.
