Governor to carb throttle rod adjustment

John T

Well-known Member
I always forget this grrrrrrrrrrr. To adjust the link rod from my Governor to the carb throttle on my 1938 Unstyled JD B DLTX 10 Carb, I thought I pulled the hand throttle all the way back to idle, held the carbs top throttle all the way back to idle, AND THE ROD LENGTH ADJUSTMENT SHOULD BE SO ITS ABOUT 1/2 HOLE "SHORT" OF DROPPING IN!!!!!!!!!!!

That right??????? Mines NOT there now lol maybe why it wants to run a tad on the heebie jeebie jumpy side lol.

Thanks in advance, John T
a197066.jpg
 
Take a look at the parts diagram below.

a190150.jpg" width="650"




Note the throttle rod (Key 4), 1/4 nut (Key 5), throttle rod end (Key 6), and governor arm (Key 23).

Reviewed the [b:654c4848f0]SERVICE MANUAL ON THE JOHN DEERE B TRACTOR SM2004[/b:654c4848f0] under the [b:654c4848f0][i:654c4848f0]Control Linkage[/i:654c4848f0][/b:654c4848f0] topic and [i:654c4848f0]Throttle Control Rod Adjustment[/i:654c4848f0] paragraph on page 110-10-3.

"[b:654c4848f0][i:654c4848f0]If throttle control rod does not adequately regulate the engine speed it may be adjusted. Note that the rod is threaded at the end which is connected to the governor arm and secured with a jam nut. To adjust rod length, disconnect rod from governor lever arm and loosen jam nut. Move speed control lever to the wide open position. Set throttle disk in wide open position. Lengthen or shorten rod end until the rod is 1/2 hole short. Place into position and lock jam nut.[/i:654c4848f0][/b:654c4848f0]"

Take a look at the photo below of "Uncle Earl" our 39B.

a190157.jpg" width="650"


Note the distance between the governor arm and speed change spring is approximately 1/8 inch.

Take a look at the photos below of the choke levers on "Uncle Earl" our 39B and "John B" our 43B.

a190158.jpg" width="650"


a190159.jpg" width="650"




Hope this helps.
 
John, you have the right idea about adjustment, but backward.
Engine stopped, full throttle, carb lever wide open, the governor rod should be ½ hole too short. (⅛")
 
THANKS TO ALL I had the 1/2 hole portion correct BUT THATS ALL LOL

Bass Ackwards

I like this better because there's no doubt where wide open is, if you talk about idle, there's a gray area due to when the actual final post stop is versus the prior springy stop, plus there's that adjustment idle screw!!!!!!!!!!

I will check it first thing tomorrow

John T
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top