Cub Cadet 1450, 3600 RPM does not hold, without holding the Throttle Lever

[Robert Mazzaferro]

Cub Cadet 1450 RPM not holding at 3600.

The Tractor has Walbro Carburetor with the original linkage. The issue I am having is the Throttle Control (TC) will not hold at the highest RPM (3600) when pushed all the up on the dash. The TC slowly pulls back down, when running, whereby the engine RPM drops down if I do not hold the TC in place.

I am not sure, if it is the way the linkage is setup or if the TC is the at fault. It seems the Carburetor opens up all the way when the TC is at around ½ way, on the dash. The governor spring is not pulled at that point. Only after, the lever is pushed all the way up on the dash, which allows the Governor Spring to be pulled, allows engine to reach 3600 RPM. The Engine does not reach 3600 RPM unless that governor spring is pulled (I am not sure if that's the way it's supposed to work). If I do not hold the lever in place, the spring pressure pulls the TC back down which lowers the RPM.

Any Help would be appreciated! Bob.

 

[dschwandt]

The throttle lever pressure is adjustable under the dash.
Take a peek up under it and you will/should see where/how

 

[Robert Mazzaferro]

Thank you, I just do not see what adjusts on it unless the PO changed it to a different type.

 

[digger]

Thank you, I just do not see what adjusts on it unless the PO changed it to a different type.

It's called using a large end center punch, very lightly.

 

[Robert Mazzaferro]

Ahh, OK, I see what your saying. Thank you.. digger!

 

[Robert Mazzaferro]

Ahh, OK, I see what your saying. Thank you Digger.

 

[rfunk]

It's called using a large end center punch, very lightly.

My 149 has the same issue, but with the snowthrower only, not the mower deck. I'm going to keep this in mind.

 

[wkashner]

I had to tighten some adjustment on the throttle control under the dash on my CC 149 to keep it from moving on its own. I don't remember what it was, but do recall it was obvious when I removed it from the machine. It's now a little stiffer than it would have to be, but it's better than the engine slowing down of its own accord.

 

[sgalante]

I have a similar problem. My dealer oiled/greased the cabling in the throttle and the throttle wouldn't hold in the higher position. The next time I brought it back for repairs, he looked at it and saw that there were 2 places that needed to be tightened. It still slips a little, so I fixed it with a wide shaved down at one end popsicle stick that I wedge between the side of the lever itself and the dashboard. I keep the popsicle stick on a small piece of twine so I don't lose it when it's not in use. The tractor is sitting at my other house. I'll take a picture of it when I get a chance.

 

[Robert Mazzaferro]

UPDATE:
I removed the Throttle Control (TC) with cable and placed it into a bench vice, I found a Bolt that was the same size as the rivet on the TC. Squeezed the rivet in the vice, where I was able to measure the amount of force little by little, to increase the amount of drag on the control. It is now working as it should. The hardest part was taking out the TC and re-installing it, not much room under that Dash. Again Thanks Digger for your input.

 

[1811Cub]

Great job. Very cost effective way of saving one of them.