Questions on 2020

[normde2001]

"I've always run it with the valve almost closed in order to slow the drop rate and keep it from slamming the ground."

I'm sure that's your problem. Keep that valve completely open ccw, and control the drop rate with the little red handle under the seat.

 

[Eddie]

</font><font color="blue" class="small">( control the drop rate with the little red handle under the seat. )</font>

I don't have a little red handle under the seat. I only have the big round one.

 

[mark777]

Eddie,

Not exactly sure on your tractor...but there should be a small (about 5/16") stem valve with a roll pin handle. Sometimes easy to overlook as part of the upper case housing. Often the roll pin can be broken or missing, but that is the valve that controls the speed of the implement.

Mark

 

[Eddie]

</font><font color="blue" class="small">( Eddie, Not exactly sure on your tractor...but there should be a small (about 5/16") stem valve with a roll pin handle. Sometimes easy to overlook as part of the upper case housing. Often the roll pin can be broken or missing, but that is the valve that controls the speed of the implement. Mark )</font>

Mark, I see what you're talking about on my YM-1700, but I don't have one on my YM-2020.

I have an extra lever by the lift lever, as in the picture, do you happen to know what this lever is for?

Thanks
Eddie

 

[mark777]

Now that is interesting....that very well could be it. Similar to the "F" and "FX" models?? I just know your tractor has got to have one somewhere /forums/images/graemlins/smile.gif. Also agree with Norm about the implement lock partially open starving your pump.

Someone will hopefully chime in and straighten us out.

Mark

 

[pruntyc]

On the new John Deere tractors, made by Yanmar, the knob not only stops it, it is used to control the speed of the drop. Could they have done this on the later Yanmars?? If so it wouldn't have anyother lever for control. One of the dealers should know.

 

[kayssupply]

The extra lever is draft control. It is used to maintain a depth level when plowing. You have to have linkage to make it work. To date I have never had a tractor with the linkages to make it work. I have had some with the electric over hyd. that would work.

 

[Eddie]

</font><font color="blue" class="small">( On the new John Deere tractors, made by Yanmar, the knob not only stops it, it is used to control the speed of the drop. Could they have done this on the later Yanmars?? If so it wouldn't have anyother lever for control. One of the dealers should know. )</font>

The YM-1700 has both. I think on it, the big knob only controls the rate of drop.

Right now I'm modifying the seat bracket for another seat, when I finish that I'll check it with the big knob wide open.

Thanks for all the help
Eddie

 

[Eddie]

With the big knob fully open it still sounds as if the pump is starving at high RPM's

 

[1danny]

Did you clean the hydraulic screen? Do you have the correct hydraulic filter?

Danny