Gas gauge problem resolved

[Davey1965]

When I would fill up, the gauge would only read 3/4 full...as gas would be consumed it would start to work again as it got below 3/4. I ordered a new fuel unit set ($80) part number 37080-MCS-G00. It has a float on it and fits in the upper tank...Here is how you do it.
Siphon tank so no gas is in the upper tank...or drive it until you are at 2 bars.
Put on center stand...Take off seat.
Raise and support upper tank like you do when changing air-filter.
Look on the underneath side of the tank that you just raised...you will see it held into tank with 4 bolts....Take a picture of it.
Take off left side panel (small one just underneath seat.) 3 allen bolts. From underneath this panel you can unplug the fuel unit set.
Remove 4 bolts from the fuel unit set...carefully fish it out of tank, paying attention to how it came out.
Fish in the new one with the new o-ring that comes with it......all this took me about 2 hours...but I do stuff slow.
problem resolved...works good...hope this helps someone.

 

[Hueyf4i]

I may need to do this sooner or later, when I top off it takes it a bit to register that last bar. . .

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[Rekoob]

Can that "arm" be adjusted at all?

When I fill up it goes right to full bars but seems like it drops one bar pretty quick. Now I'll admit I don't know how many miles pretty quick is but I've always thought it drops a bar faster than it should.

I'm just curious, I don't think I would bother trying to tweak it to register longer on full bars but wondering if that's an option.

 

[Tdinova]

There are ohm reading for full and empty part of the sensor. Mine screwed up and all I done was clean the part what gives the resistance. I used contact cleaner and rubbed it with fine scotch bright

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[Tdinova]

I should also add to wash the area with gasoline once your done using contact cleaner.

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[Davey1965]

No, I did not see a way to adjust the arm unless you bend it a little. If you fill up on your sidestand you may not get it 100% full. an then if might seem like you lose your first bar quick.

 

[Tdinova]

check the ohms on your old one with the arm all the way up then down..

 

[Stevea4117]

When I would fill up, the gauge would only read 3/4 full...as gas would be consumed it would start to work again as it got below 3/4. I ordered a new fuel unit set ($80) part number 37080-MCS-G00. It has a float on it and fits in the upper tank...Here is how you do it.
Siphon tank so no gas is in the upper tank...or drive it until you are at 2 bars.
Put on center stand...Take off seat.
Raise and support upper tank like you do when changing air-filter.
Look on the underneath side of the tank that you just raised...you will see it held into tank with 4 bolts....Take a picture of it.
Take off left side panel (small one just underneath seat.) 3 allen bolts. From underneath this panel you can unplug the fuel unit set.
Remove 4 bolts from the fuel unit set...carefully fish it out of tank, paying attention to how it came out.
Fish in the new one with the new o-ring that comes with it......all this took me about 2 hours...but I do stuff slow.
problem resolved...works good...hope this helps someone.

 

[Stevea4117]

Hi Davey,
Just fitted brand new upper sensor from Honda still stuck on three bars. Have you any pics from when you did yours ?