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did you try playing with the motor angles and not the trim tabs? Raise one motor a few degrees and then play with the other motor, both up and down. Check that the wakes of the engines at speed meet somewhere around 25 feet aft ( motor toe out adjustments Uneven thrust can also cause a lean. In...

99 times out of 100, a no or incorrect speed indication is caused by a blockage in the pitot orifice and/or tube and not the gauge. If there is no speed data, the gauge will not and can not calculate trip distance Bear in mind that the even if the speed 'works; the pitot system is not very...

If the previous owner had no maintenance done for 7 years ( and I doubt that since at this point the batteries would be crap and the oil would look like liquid tar) that would be a very bad piece of info. I have always said that if a boat looks like it wasn't maintained. the mechanicals probably...

you are correct. The actual gauge bezel is missing. I don't know if that means that water can seep in but your gauge doesn't look too badly damaged. Unfortunately new gauge is pretty expensive. You can buy a new bezel but at just under $200 it would not be a good decision if the gauge itself is...

A photo would help. I also don't know what you mean by "I think there is water damage" The bezel you are referring to, is that the sun cover? The gauge itself generally is water proof (resistant).

The symptom you mention to be accurate is blowout and not cavitation. To be really picky, the cavitation plate you refer to is called the anti-ventilation plate:) OK....chime in!

I should also point out that any water that is in the anchor locker will drain into that mid bilge. That includes rain or washdown water that leaks into the locker and water that drips out of a wet anchor line. In other words, it is basically impossible to keep that bilge dry. Although more...

Many angels.. The 'devil' is in the details

If the arm starts too far to one edge but the sweep would be OK if it started offset from the edge, then that can be adjusted by removing the arm from the motor shaft and repositioning it so that the rest spot of the blade changes.

I don't think the space is very deep or wide but that depends on where the access plate is placed. What you can do is stick a stiff wire or thin rod into the existing drain and feel when it hits bottom.

Good sketch. Thanks

That's a good idea.

All valid points. I was just wondering if when using an ohm meter to check for problems, the changes would be continuous or incremental. With the swing arm types, 'intermittent' or dead spots are possible. Can that happen with the rod type senders? In other words could you have a bad sender that...

That 'drain' drains into the mid/fwd bilge area. That bilge area does have a pipe that passes water under the gas tank into the aft bilge, so in theory the yuck should drain aft BUT... The mid/fwd bilge is lower than the aft bilge when the boat sits level on the ground or when floating in the...

Below the water line thrus should not be stainless. More appropriate would be chromed bronze

Skunkboat: I know that swing arm type senders change resistance in 'infinite' steps. That is to say that the output is a continuously changing resistance as the arm is swung. What I don't know is if the KUS (WEMA) style rod senders have stepped output resistances for specific levels as you...

I thing the point to note is that these days, no motors on shipment is common but ship with one motor on a twin motor hull???

Hopefully you took notes or pictures of what was connect to what. If not you will need a rigging diagram for your setup, If you get very lucky, all the colors will match up.

OK, do the same search but for Mercury:) These parts are fairly common ( or were before the parts shortages). If you go to a marine supply store, they will have one or will order one. Note that genuine Mercury parts like Yami parts will cost more than other makes

Did the factory rig the motor or did the dealer? I can understand the issue of motor shortages but do they expect you to take delivery with one motor?!!!! Something very weird here.