VM26 float level

[gssteve]

I am in middle of cleaning the carbs on my 1979. GS750E.
So have read the threads here and the good document from the GSR rebuild document.

However the GSR has the floats set at 24mm and the manual has them at 26mm.

Little difference of 2mm, I am no expert but which is the correct level?
What experiences have others had?

Steve

 

[chuck hahn]

24 to 26 MM is the stated range in the manual...I set them ( my bikes ) at 25. Its the same range for the 78 and 79 1000s also.

 

[chuck hahn]

Be sure to install the floats the right way too..look at the adjustment tang and youll see a witness mark from the float needles touching them. AND youll notice one side of the brass plate has a little tab bent at a 90 degree on one side of it. That tab should be visible as it rests against the post as you look at the carbs. Its basically a stop so they dont drop down too far when the bowls are low on fuel. If they drop too far, the float needles can fall out of the seats.

 

[Guest]

You can measure them, Chuck is right to be somewhere in the middle, 25mm, but really the best way to set them is with a clear tube. If your carb rack is set up to have the choke cable run through the carbs, there should be a brass threaded fitting that the cable goes through at the carb rack. Take that out and you'll find it fits in the float bowl drain hole and the right sized clear tubing fits great over it to make the tool needed.

 

[chuck hahn]

rob...In all my experiences, the 25 is almost perfect. In any case, you cant do the clear tube test like in the manual without them being "set" at some level . But when you do it, the 25 is pretty darned close. And you have a 1 MM tolerance ( +/-) in the tube check as well..as shown in the manual.

 

[BassCliff]

Hi,

Check your manual. I think the floats on the VM carbs from the '79 GS750E should be set at 23mm, +/- 1mm.


Thank you for your indulgence,

BassCliff

 

[gssteve]

Hi Bass cliff ,On page 18 of the manual states 25 to 27 mm.
So this why I ask this question what is the level?

The VM carb rebuild states 24mm.

I guess the clear tube method will determine the real level, I try this.
Thanks guys

 

[allojohn]

Hi Bass cliff ,On page 18 of the manual states 25 to 27 mm.
So this why I ask this question what is the level?

The VM carb rebuild states 24mm.

I guess the clear tube method will determine the real level, I try this.
Thanks guys

Go with BassCliff and the 24mm - it's the consensus of the '77-'79 750 guys on here. As a rule, anything that BassCliff says is pretty well on the money.
The manual number is for the "weird" '77 B model.

 

[BassCliff]

Hi,

Go with BassCliff and the 24mm - it's the consensus of the '77-'79 750 guys on here. As a rule, anything that BassCliff says is pretty well on the money.
The manual number is for the "weird" '77 B model.

Well, I wouldn't go that far but I appreciate your confidence. I'm just a collector of information. I didn't look it up in the manual. The number I quoted was from the chart collected from the carb spec thread sticky.

The collective wisdom is to pretty much set your floats right in the middle of the suggested range. Then adjust from there if necessary.

You may have noticed that different years/models may have slightly different float height specs.

EDIT: Sure enough, the manual for the VM carb 8-valve GS750 says 25mm-27mm. So I'd start with 26mm and see how she does. But I will defer to those with first-hand experience on this model.


Thank you for your indulgence,

BassCliff