(quoted from post at 23:38:05 09/18/18) Without a serial number how can you easily tell a 971 from a 981? Is there a difference in the pedal size?

No difference in pedal size. The difference is that the *81 transmission will have 2 levers on the left side of the case, one near your heel and the other ahead of the running board. The front one will have 3 detent positions, 540, N, 1000 PTO. The rear one will have 2 positions, Ground speed PTO ON or OFF.

The other thing that will be different is that the PTO shaft on the *71s is solid as your 871 is. On the *81s it will be hollow and have a bolt in the end of it. This was to enable the operator to switch from the 540 spline to the small 1000 spline end.
 
(quoted from post at 00:38:05 09/19/18 ) Without a serial number how can you easily tell a 971 from a 981? Is there a difference in the pedal size?

A serial number will not help you tell the difference. It is the model number that is stamped above the serial number that would tell you.

As Larry said, the x71 has the single speed PTO so it won't have the levers on the left side for the 1000 rpm and ground speeds.
 
Larry does the PTO run backwards in ground drive? If so can you run the PTO backwards stationary by disengaging the traction coupling?
 
(quoted from post at 10:09:43 09/19/18) Larry does the PTO run backwards in ground drive? If so can you run the PTO backwards stationary by disengaging the traction coupling?

Are you asking if the ground speed PTO will run backwards when the tractor is in reverse? I never thought about that, and can't say for sure, but if it does, then it would probably do so with the traction disconnect in the disconnected position as the driven gear for the ground speed is internal to the transmission and the traction disconnect only disconnects the output shaft from the differential.
 
(quoted from post at 09:09:43 09/19/18) Larry does the PTO run backwards in ground drive? If so can you run the PTO backwards stationary by disengaging the traction coupling?

No. It does not!

Since in ground drive it is driven by rear wheels, disconnecting the TDC will get you nothing . . . unless you jack up a rear wheel and have some alternative means to make it go round in the direction that makes the PTO turn backwards.

You could jack up a rear wheel, leave the TDC connected and put the transmission in R1 or R2. That would do it. However either of these two scenarios would be considered dangerous in my book unless you secured the tractor well enough so that it could neither fall off the jack nor move if it did.
 

Oops! disregard my previous reply for the most part. I had it in my head that the ground gearing was external to the transmission. It is in the transmission as Sean has said.

With the TDC disconnected placing the transmission in R1 or R2 should drive the PTO in reverse while the tractor is stationary.
 
Yes, you should be able to make a PTO shaft turn backwards by running the tranny in reverse with ground speed engaged, regardless of whether
or not the traction disconnect is engaged or not.
 
I was thinking about a post hole digger Most of us have had a auger catch on something a screw it's self in. Then you get out the pipe wrench to turn it out.
 

Might be worth a try. I can see a potential drawback or two to that approach, however.

1. Most of the time one needs to rock the tractor a bit to get the TDC disconnected. That might not be so easy to do with a posthole digger stuck in the ground to the point where it usually catches and pulls itself in.

2. By the time one shifts all the levers and disengages the TDC, it might have been easier to use the pipe wrench.
 

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