Carb float drop

[pointblank1000]

With is better?
Carb Float drop minimum distance or maximum
Distance?
If spec calls for between 1 inch and 1 1/2 inch.

 

[racerone]

What motor ?----Never worried about float drop myself.-----Rarely have to adjust floats.

 

[pointblank1000]

1990 60hp johnson
1 1/8 to 1 5/8
If having fuel delivery issues where would you
Set it to be sure your getting plenty of fuel?

 

[F_R]

Actually, the float should never drop clear down to "Maximum" while running.

 

[oldboat1]

If you want to fool around with it, would be curious to hear what your float drop is, when the float appears to be level with the edge of the inverted bowl.

 

[pointblank1000]

I set the drop at nominal.
Just wondering if one position is better than
the other. Is there going to be more fuel in
the bowl if set at 1 1/8 or less?

 

[racerone]

With the float bowl installed what distance can the float drop ?----Why the concern over this setting ?----What is your motor doing / not doing ?-----There is a saying.------" most carburetor issues turn out to be something else " ----Many shops would second that idea.

 

[Vic.S]

I set the drop at nominal.
Just wondering if one position is better than
the other. Is there going to be more fuel in
the bowl if set at 1 1/8 or less?

Provided the float drop is between the max an min figures it will be just fine.

If it does not drop far enough the valve will not open fully and you may be starved of fuel'
If it drops too far there is a risk thet the needle could fall out of the seat or be pushed sideways and jam

The most important adjustment is the float level. You may need a special tool to set that precisely but with the carb body inverted and the float just resting on the needle the float should be parallel with the carb body to float chamber joint . Its not super critical.

If you have a soft tip needle be sure the clip between the needle and the float arm is in position.

There is a good video, with float adjustment details towards the end, by Stuart Allen of Dangar Marine here .

 

[pointblank1000]

Float level is parallel with the body so I will say it's in spec.

 

[oldboat1]

What's the drop on yours when level with the edge of the inverted top?

 

[pointblank1000]

Mine looks just like the hangar video.
The actual drop is at the spec mid point.
I was wondering about all this when cleaning the carburetor.

 

[oldboat1]

Thanks -- was curious!

Good boating to you.