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Suggest not to yell.

Which can be clearly seen if one has an app that displays charge current or if one has a clamp on ammeter.

I seriously doubt that is what Yamaha said.

Yamaha says to keep the oil level between the min line and the max line.

In your case several ways to get there. Drain all of the oil and refill. Or...

From a charger standpoint I would say yes.

From a battery standpoint it is a do not exceed number.

This battery charging stuff is madness IMO. On the one hand they say a lithium battery is...

It takes voltage to push amps. The higher the voltage the greater the amps. Within reason of course.

Does the manual for the 105 AH cranking battery need to be updated?

There is a Notice saying not to use the battery above 113 degrees F. Does not agree with the above mentioned operating...

My experiments with an adjustable voltage power supply indicated that my Ionic brand lithium battery would fully charge at 13.4 volts. It is just going to take longer.

Does your battery have an...

If you have a Yamaha digital multifunction tachometer there is just a setting change to be made. One adapter harness needed.

Yamaha has made it easy to go from older models to newer models, or...

Legality aside, why can't it be that way with a Mercury? Just a matter of someone spending time and money to develop a modification.

What is the relationship of the charger to the BMS with resect to keeping cells balanced?

In the case of a battery being connected to an alternator, is the BMS less able to keep the cells balanced?

Which brand? Andy at www.simyamaha.com carries the Permatrim brand.

Try pumping the primer bulb when running the motor at power. See if the problem stays or goes away. See if the primer bulb can be kept full and tight while pumping it.

Cells within a battery are at times wired in parallel and/or in series. Most battery makers generally say OK to X number of their batteries being connected in series and/or parallel.

Series...

The tilt limiter is an optional accessory.

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Thanks for the report. No reason at all why the battery should not work well with your F300. Similar electrical system as the VF250. Many of which are using lithium batteries.

A Yamaha VMAX propeller on a VMAX HPDI calls for a Yamaha two piece thrust washer.

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Making Oil is a term used when excessive amounts of gasoline get into the oil system. All four strokes are susceptible to this. Yamaha 4.2 liter blocks with flame sprayed cylinders liners seem moreso.

Depends upon the F300 model. Some use digital controls. Which would require a digital hot foot. If they exist. A mechanical F300 is similar to a VF250 in that it uses mechanical controls.

The solution for many is to keep the start battery not connected with the house battery unless the motor is running.

Motor not running; start and house battery are not connected. House battery...

Two batteries in parallel are electrically just like one battery only. Difference being the two batteries together have more amps to provide.

In parallel both batteries will help to start the...

One downside is if the two batteries got discharged to the point where they would not be able to start the motor.

In salt water applications where being able to start a motor is more critical, the...

Six check valves. One for each oil line to the intake manifold.

You might try swapping the top oil lines to the middle or bottom pairs of carburetors to see what happens.

Is the oil hose to the...

For instance
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Depends. Upon what type of control box is being used.

703 external side mount it is in the box itself.

704 top mount it is part of the key switch panel.

Pull the kill switch lanyard. Crank...

SM has a note saying that you do.