Carb question....Help!

[Squidley]

Hey Folks,

I have my '86 down and apart and decided since it's this far down I would take the carbs off and check the float levels to be sure they were in specs. This is where my problem lies, the manual doesn't give a measurement at where the float should be set at statically, it shows how you can check if they are high from the outside and together, but not a measurement internally.

Does anyone know the measurment that they should be set at and where the measurment is taken from. I am glad I did this as someone has been into these carbs before and I had a screw fall out that wasn't installed properly. Any help would be greatly appreciated.

[muffinman]

Brad I know I have seen the info you want I will look in my notes when I getg back to the RV this evening and if I have it I will let you know.

Jeff

[mm482]

Hi Brad,

This link is for a VMax. I don't know if the setting is the same for a Venture. Check your's and see how they compare.

 

 

http://www.vmoa.net/xoops/modules/newbb/viewtopic.php?topic_id=923&forum=2

 

Earl

[greg_in_london]

The level specified in the manuals depends on which model you have.

 

Yamaha state that the fuel LEVEL should be from 14 to 17 mm plus or minus 0.5mm below the mid point of the carb centre (marked on the side of the carb) depending on which you have. I posted some information on page 9 of this thread: http://www.venturerider.org/forum/showthread.php?t=20950&page=9

I tend towards the lower level (ie 17mm).

 

This is more accurate than setting the float height and can be checked without splitting the carbs, but for what it's worth, on my VR setting the float top horizontal or sloping fractionally upwards, with the height 20-21mm above the central casting puts you in the right ballpark. [NB this is measuring the float height vertically above the central casting, which may not be the highst point.]

 

Your model may be different, though.

[Squidley]

Thanks fellas for all your responces, I have set them at what I saw in the posting that MM482 put up from the Vmax forum. I'll just have to put them on and see what comes of it, do appreciate all the input

[Gearhead]

Can't you assemble the carbs and bench test the fuel levels with a gravity-feed can for supply?

 

Jeremy

[Freebird]

You could do that. You could just set the floats with a caliper and them test them on the bench with a clear tubing off the carb drains. There is a diagram in the service manual that shows how to check the level with a piece of clear tubing.

[IH Truck Guy]

Hey Folks,

 

I have my '86 down and apart and decided since it's this far down I would take the carbs off and check the float levels to be sure they were in specs. This is where my problem lies, the manual doesn't give a measurement at where the float should be set at statically, it shows how you can check if they are high from the outside and together, but not a measurement internally.

 

Does anyone know the measurment that they should be set at and where the measurment is taken from. I am glad I did this as someone has been into these carbs before and I had a screw fall out that wasn't installed properly. Any help would be greatly appreciated.

 

Hey Brad,I see I got ya thinking at Don's..Please get real good at setting the levels,as I may need to enlist your expert help If by some chance we just happen to be in Canada.:whistling:

[Squidley]

Hey Brad,I see I got ya thinking at Don's..Please get real good at setting the levels,as I may need to enlist your expert help If by some chance we just happen to be in Canada.:whistling:

 

 

I'm getting better at fixing these antiques

But I believe that I will bench test it like Gearhead mentioned. I just got all my parts in and now I can really kick it in to high gear and hopefully assemble it by the weekend

[bobcat]

Let us know how it turns out

[Gearhead]

When you do the bench test, subject the carbs to some vibration (wiggle them a little with your hands) to simulate being mounted on an engine and see if that affects your reading at all.

 

Jeremy

[Squidley]

When you do the bench test, subject the carbs to some vibration (wiggle them a little with your hands) to simulate being mounted on an engine and see if that affects your reading at all.

 

Jeremy

 

 

Thanks Jeremy....carbs are not my specialty, but I have a feeling that I'll be fully schooled with this set