Trolling motors do not need to be in the water to run. Though it is generally pointless to run one out of water for more than a test.
It has a slow short.
The size of wire needed for a trolling motor depends on the motor's maximum amperage draw and the length of the wire run. A general guideline for a 12V trolling motor is 6-gauge wire for runs up to 10 feet, 4-gauge wire for runs up to 20 feet, and 2-gauge wire for runs over 20 feet to minimize voltage drop and ensure proper performance. Be sure to consult the manufacturer's recommendations for your specific trolling motor.
To get 24v from two 12v batteries you just link between ones positive and the others negative then connect your motor to the spare terminals, but your 12v charging system will not charge them (and any 12v equipment connected to them will burn out!) without removing the link.
.Mixing a small amount of oil in the diesel fuel will not hurt a motor. The motor will run rough and produce black smoke.
Possibly but you will have twice the amperage for sure. So the 2 batteries will run the trolling motor far longer. My guess is yes, they will last longer than just one battery. That is an educated guess.
Running a boat motor out of water can cause damage to the motor due to overheating. The water in the lake or ocean helps to cool the motor while it is running. Without water, the motor can overheat and potentially seize up, leading to costly repairs or replacement. It is important to always run a boat motor in water to prevent damage.
If you mean run without water, you could put an electric motor inside it.
other than sluggish stearing driving with the belt off of your motor won't hurt anything as the water pump is run off the timing belt(different belt hidden behind that black plastic)
To test a boat motor out of water, you can use a motor muffs or a flushing attachment to connect a hose to the motor's water intake. This will allow you to run the motor without it being in the water, ensuring it is functioning properly. Be sure to follow the manufacturer's instructions and safety precautions when testing the motor out of water.
IT can but it is not recommended. It will effect performance, gas mileag, and eventually hurt the motor
25 HP is 25 HP, no matter how you slice it and dice it.
NoNo