float bowl height

[Matthew A.]

The Seloc manual lists my motors float bowl height as being 13/32" from the top of the float to the carb body. [with carb inverted] Is this setting correct? I ask because it seems the fuel level in the bowl would be too low. Being at or level with the fuel pickup hole in the main jet. My concern is possibly leaning the motor and damaging it at the 13/32" setting. Also, Seloc does not give a setting for float drop.

Carbs are #1. WE18-1A 2/88. #2. WE18-2A, 2/88 and #3. WE9-2 6/86

Motor 88' Force 85 hp 856X8B

Your help greatly appreciated.

 

[bgbass.1]

Re: float bowl height

I set the floats by eye with carb. inverted put it level should be ok there

 

[steelespike]

Re: float bowl height

My intertec manual says 13/32 inverted from (true) bottom of float to gasket surface.pic shows float parallel with the carb body.
I don't think you have to worry about running lean under those conditions
if the level is too low it plain won't run right.

 

[Matthew A.]

Re: float bowl height

Thank you for responding steelespike...bgbass1.
Frakin Seloc...


Although, having a Seloc manual is better then having no manual at all...well, for the most part anyways...I have finally come to the conclusion that as soon as I am able to find a factory manual on Ebay I'm buying it.

 

[Frank Acampora]

Re: float bowl height

Clymers gives both: level with casting or 13/32 inch. I set it by eye to be level with the casting or SLIGHTLY lower on the free end to raise the fuel level slightly.

As to fuel level, you are making assumptions again: The bottom of the float is not the level of the gas in the carb!

1. Gasoline being lighter than water has less flotation and will cause the float to be further into the liquid and not float directly on top of it.

2. The weight of the float inverted will hold the needle closed against pressure you can blow by mouth. However, most people can not generate more that 2 PSI this way. SO: with the carb in operating position, the float needs to generate enough pressure against the needle to overcome the 2-4 PSI fuel pressure generated by the fuel pump. Thus: The actual fuel level will be somewhere above the bottom of the float.

As to float drop: Clymers shows it as the bottom of the float 1/16 to 1/32 above the top of the fixed jet with the carb upright. I don't usually pay too much attention to it if it is anywhere close.

 

[Matthew A.]

Re: float bowl height

I noticed that using the 13/32" measurement from the base of the fuel pickup which houses the main jet to the top of the float [carb inverted] instead of measuring from the carb body where the float bowl meets the carb body, [as mentioned by Seloc] the float height [measured at the free end] will be about 1/32" less then level with the carb body. Or, about 3/16" from bottom of the float to carb body. I have tried several times and using this method is the only area where I am able to apply the 13/32" measurement that allows for the float to be "level" with the carb body.
Could it be that Seloc gives the wrong explaination to achieve the 13/32" measurement for my specific year motor?
Oh...Thank you for helping me with this Frank. Your help and knowledge is always very much appreciated.

 

[steelespike]

Re: float bowl height

I noticed that using the 13/32" measurement from the base of the fuel pickup which houses the main jet to the top of the float [carb inverted] instead of measuring from the carb body where the float bowl meets the carb body, [as mentioned by Seloc] the float height [measured at the free end] will be about 1/32" less then level with the carb body. Or, about 3/16" from bottom of the float to carb body. I have tried several times and using this method is the only area where I am able to apply the 13/32" measurement that allows for the float to be "level" with the carb body.
Could it be that Seloc gives the wrong explaination to achieve the 13/32" measurement for my specific year motor?
Oh...Thank you for helping me with this Frank. Your help and knowledge is always very much appreciated.

I think the directions in the manual ,my Intertec,Is pretty straight forward.
13/32 from free end of float bottom to gasket surface.The term "float level" is not a reference to the float being level with the body but being at the proper level.By the way this basic method of getting the correct float level is almost universal with about the only variation being a much smaller demension taken
between the float and the gasket surface.Sometimes fitting a small drill bit between the surface and the float to measure.

 

[Frank Acampora]

Re: float bowl height

Matt: Doesn't Seloc show a photo? Re-reading your post, it looks like you are measuring from the casting to the top of the float itself. This will leave the float at quite an angle.

What Seloc means is when the carb is inverted measure from the casting to the top of the inverted float---actually the bottom surface when in running position. This will essentially have the float position close to parallel with the casting.

I never saw the Seloc, but I am beginning to understand why people consider it inferior to Clymers.

 

[Matthew A.]

Re: float bowl height

Seloc does have pictures regarding where to take the measurements from. However, none of the pics are for my particular motor. The pics shown are for a single carb model [unsure what year] as well as multiple carb setups for engines made in the 90's sometime. Seloc has a lot of typo errors also that makes it that much more difficult. For instance, one pic states the float drop tab as being the tab to adjust the float height and the float height tab to adjust the float drop. Then, another pic for an entirely different motor/carb setup on the next page shows naming the tabs correctly. However, the pics appear to be identical. No where does Seloc explain the steps neccessary for the 85 hp exclusively. They simply group their explainations for single carb setups and then for setups with multiple carbs. Most pics seem to be for engines made sometime in the 90's.

What Seloc means is when the carb is inverted measure from the casting to the top of the inverted float---actually the bottom surface when in running position. This will essentially have the float position close to parallel with the casting.

Strange...as I mentioned, with carb inverted and measuring from the top of the floats [actually the bottom surface when in running pos.] free end [end opposite where the float is hinged] to the tip of the fuel pickup [the casting that protrudes beyond the main jet and into the bottom of the fuel bowl] a measurement of 13/32" between them will allow the bottom surface of the float [floats top surface in running pos.] to be parallel with the casting. [surface where the float bowl meets the carb body] Actually, it will place the float to allow for a slightly higher fuel level in the bowl then if truely parallel with the casting. The float will be just less then parallel by about 1/32" opposite the hinge side of the float.