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7.8mpg times 14 gallons means about 110 miles travel before the Low Fuel warning occurs.

Running at 5000 RPM the distance to Low Fuel warning would be about 83 miles (using the Yamaha provided...

Another GH member posted how the Yamaha GP1800 SVHO fuel sender ohms readings and dash ‘fuel levels’ correspond to actual liquid fuel amounts.
...

Check cylinder compression?

What does the impeller and wear ring liner look like?

Have you inspected inside the jet pump?
Has the jet pump ever been serviced?

I considered a metal cage ‘fuel rack’ but decided just carrying the fuel jugs as shown would work well for my purposes.

I also have a 12 US gallon marine Low Profile Moeller fuel tank that fits on...

When we are riding far enough that fuel becomes a real concern, we often carry extra fuel.
Especially when riding in areas that may not, or do not, have marina fuel available.
...

I have not measured fuel consumption accurately enough to provide a useful comparison. The dash fuel level display on my pre-Touch screen GP1800 SVHO is quite coarse and not useful for calculating...

Bent or damaged pins?

Is there a connector locking tab that needs to be moved to allow the clip/latch to work?

Tow it to a place where you can work on it on land.

About 325 pounds total load weight on 2016 FX HO (1.8 liter engine).

120 miles without activating the Low Fuel alarm means perhaps 14 US gallons consumed. That works out to about 8.6 miles per...

It should be a standard replacement winch, sold by Triton through their dealers. You would need to verify that the Triton part number you order will be of the type you want.

Probably also...

What exactly did you order?

The benefit of doing the epoxy repair promptly is minimizing the risk of further damage (delaminating) from high speed water exposure. Forcing water into the damaged areas doesn’t do the hull any...

It is possible the jet pump has seized, preventing the engine from turning.

Remove the jet pump and check the jet pump for rotation binding.

With jet pump removed, try cranking the engine with...

http://greenhulk.net/forums/attachment.php?attachmentid=485974&stc=1

http://greenhulk.net/forums/attachment.php?attachmentid=485973&stc=1

That looks like an older version of the Triton winch tower. :-k
The arm angle for the bow roller is held in position using just the friction of the two arms against the sides of the winch post,...

It looks like the fibrous layer has been exposed in a few places.

I have posted NanoXcel repair how-to info elsewhere on the proper procedure to clean and prepare the exposed NanoXcel material...

Welcome.

What RPM is the engine able to sustain on the water at wide open throttle?

Ficht engine throttle plates have large holes. Even with the throttle plates ‘closed’ there is plenty of air flow into the engine.

I suspect your engine is not revving ‘full throttle’ but is able...

http://greenhulk.net/forums/showthread.php?t=295680&p=3151088&viewfull=1#post3151088

2017 and 2021 GP1800 SVHO shown at idle speed or neutral
...

As a first guess, the TPS sensor on the throttle body may be sending incorrect throttle signals to the EMM.

The reverse switch wires seem unlikely to cause engine revving on land.

But the...

Splash Guard installed under the bow can redirect hull spray when operating on plane. Designed to reduce forward water spray from reaching the rider’s face at speed.

At idle speed when the bow...

Water/moisture inside the engine throttle body can occur from condensation if you are riding in humid air. The intercooler cools the dense air flow from the supercharger and the humid air condenses...

What did you do about the woodruff key that indexes the flywheel to the crank snout?

If the woodruff key is missing or sheared the engine ignition timing will be wrong.

Post the link here, so others can find it later on.

Perhaps spray some soapy water (or degreaser type cleaner) around inside the lower hull and under the engine, let it sit (maybe scrub lightly) then rinse and drain the hull.

Gasoline can leave...