I'm rebuilding my yfa carter carb 1 barrel. I'm reinstalling the choke and curious how i should have the choke setup. Thank you

 

There are manual choke, hot air choke, hot air/electric choke. YFA carburetors.

What type is yours?

 

It is a hot air electric choke. It has the tube coming from the exhaust manifold and it also has the single wire coming off of it as well.

 

It should be set up as it was before it was disassembled.

What you're describing sounds like the climactic choke with electric assist. It uses both exhaust heat and 7v from the stator terminal on the alternator to open. The electric alone won't cut it with the stock choke cap and the 7v from the stator won't open an aftermarket electric choke cap all the way either.

 

If you reside in the northern states may have the initial choke position set for winter temperatures and another setting for summer temperatures.

Later models on 1980 & up incorporate a vacuum diaphram operated butterfy pull back from totally closed butteryfly closed position. This feature helps for cold ambient temperature conditions.

Start with the electrical lug at 4 o'clock position corresponding to fully closed butterfy position for 32F & below, if the carburetor incorporates the vacuum assist feature.
If the carburetor does not have the vacuum assist feature, set the cap so the butterfly has ~ 1/8" for ambient temperature 32F & below.
Colder ambient temperature requires smaller initial opening gap for start up.
For ambient temperature > 32F rotate cap clockwise. The 6 o'clock position of the cap elecrical lug would be the maximum position for summer ambient temperatures.
For folks in the southern states the 6 o'clock position, leanest postion, should work for all months of the year.

With engine at steady state normal operating temperature at idle, the choke butterfly should be fully open. Remove the air filter to verify.

The carburetor shop will have an after market 12 volt themostat cap where the heat tube can be eliminated. However, the 12 volt supply would have to be ignition switch source rather than alternator stator source.

When installing the cap place the electrical lug at 9 o'clock postion, then rotate the cap counter clockwise to make sure the bilmetal coil contact surface contacts the butterfly shaft lever.

 

We'll here is my question probably a dumb one but the spring almost has a hook on the end of it.. Does it go around the shaft that opens/closes the choke or doesn't go in front of it and open it when it is heated... If i do it that way it doesn't have a "spring" feeling to open /close the choke flap.

 

Thermostat choke actuators open the butteryfly choke value with either a clockwise rotation or couterclockwise rotation of the choke valve shaft.

Your YFA should require a clockwise rotation to open the choke butteryfly valve.
If so,the correct thermostat actuator coil will rotate in a clockwise direction when heated. The inside surface of the hook on the thermostat coil must contact the tang on the choke shaft.

Your may have the incorrect thermostat actuator.

Recently pulled a YFA from a 1981 F150 that had the incorrect thermostat actuator rotation.

 

I have pictures. Is there a way to post them on here? I appreciate the help

 

Click on Raven3 and send private messsage with photo attached.

 

 

 

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I posted the photos below. In case someone else sees the post and can offer any help