Throttle Spring

A friend rebuilt my carburetor and when I picked up my Ford 850 it started and after a few seconds it shot to full throttle. I suspect its the governor and noticed something didnt look right. The spring pictured is loose so I looked for parts. What I could find is pictured but it doesnt look the same. Does it connect to the clamp looking part Im pointing to? Could this be my problem?

(quoted from post at 15:54:09 05/13/22) A friend rebuilt my carburetor and when I picked up my Ford 850 it started and after a few seconds it shot to full throttle. I suspect its the governor and noticed something didnt look right. The spring pictured is loose so I looked for parts. What I could find is pictured but it doesnt look the same. Does it connect to the clamp looking part Im pointing to? Could this be my problem?

Click to expand...

o picture

(quoted from post at 14:16:51 05/13/22)

(quoted from post at 15:54:09 05/13/22) A friend rebuilt my carburetor and when I picked up my Ford 850 it started and after a few seconds it shot to full throttle. I suspect its the governor and noticed something didnt look right. The spring pictured is loose so I looked for parts. What I could find is pictured but it doesnt look the same. Does it connect to the clamp looking part Im pointing to? Could this be my problem?

Click to expand...

o picture

Click to expand...

img]

Thanks. Im working on how to post pictures.
[img:cb4e38071c]https://forums.yesterdaystractors.com/photos/mvphoto92098.jpg[/img]

The spring in your picture is the governor compensating spring located underneath the battery box. The governor spring you are pointing to is a different unit. I don't see any listed on this site, but they are available elsewhere.

Take your shop manual and adjust your throttle/governor system before buying parts. It would be unusual for the spring you point to to be an issue unless obviously broken. They do rattle around on the linkage.

I see the difference now. I found the throttle spring I pictured where you told me. The spring hook section is broken and its laying loose under the battery tray. I cant find where it supposed to connect. It may have been like that a long time. Looks like it serves no purpose but it must. The throttle moves okay and I cant see the purpose in the spring. Ill adjust the governor from the shop manual as you suggest. The carb was rebuilt and there are new linkage connectors that may be different so that may be my problem. Youre a big help. Thank you very much.

There should be a place to hook the spring on the bottom of the battery box. Not uncommon for that point to be rusted off. There are lots of tractors running around without it, but the system is better balanced with it in place.

Thanks.

(quoted from post at 11:48:29 05/14/22) .....The spring hook section is broken and its laying loose under the battery tray. [b:cb1aebf922][i:cb1aebf922]I cant find where it supposed to connect. .......[/i:cb1aebf922][/b:cb1aebf922]
Looks like it serves no purpose but it must. The throttle moves okay and [b:cb1aebf922][i:cb1aebf922]I cant see the purpose in the spring........[/i:cb1aebf922][/b:cb1aebf922]
<img src=https://www.yesterdaystractors.com/cvphotos/cvphoto125711.jpg>

Click to expand...

Ed,

The governor compensating spring does certainly provides a purpose. The spring prevents the governor from pulling the throttle control lever to a lower speed setting, and so that the friction washer under the bellcrank does not have to be so tight, that it would be difficult to work the throttle.

When you move your throttle lever towards higher rpm's, you are putting more tension on the main governor spring. The more throttle, the more tension. Throughout the lower and mid range of the throttle lever, your throttle friction disk spring (star) washer holds the lever snug so it doesn't move on it's own. But, as you move the lever to increase rpm's further towards the upper limit, the tension on the main governor spring increases to the point where the tension overcomes the friction disk and will pull your throttle lever back towards lower rpm's. This is a frustrating occurrence, often causing one to "hold" the throttle lever in the desired position. The governor compensating spring "compensates" for this tension so your throttle lever does not drop down by itself.

One end of the compensating spring hooks to the arm on the friction disk, and the other end hooks to a tab on the bottom of the battery box. Often times this has rotted off from battery acid. (See pic of new box).


I also suggest you watch this youtube video

Thanks to all. I solved the problem y with the help
provided here. Saved me hundreds. Much appreciated.