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Discussion Starter · #1 ·
I can see this set screw in my cast iron lever, it is missing the jamb nut, and I can see it on the parts diagram. But what is it for? Is there supposed to be something on the frame that the set screw should set up against? Maybe to hold the lever in the upright (and locked) position? The green covered parts list from oldgravelys has the set screw as part # 102623 and the jamb nut as 120238 for those who are watching. I don't see anything on any diagram (or on my tractor) that goes into the frame hole adjacent to the screw.
 

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The set screw is supposed to contact the neutral safety switch. The neutral switch is a good item to have functional. The set screw is in contact with the neutral switch in the picture below. Now that I think about it, a neutral safety switch is a very very good idea. Given the power of a Gravely, one could wind up through a wall before it got stopped.
 

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I keep them all working on my tractors. Never hurts to be safe. If your tractor is running and you do not have one, the wiring has been messed with underneath. You may also need the pigtail.
 

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I don't think I've ever seen an 800 series with a functional interlock switch! Or even one that was there. Learn something new everyday. I will double check if I have any for you, Ralph!
The switch in the picture is on my 818T.
 

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I forgot to mention that is works too.
 

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Discussion Starter · #10 ·
The wiring diagram shows 2. One for the lever and another for the PTO. My 810/816 came with a horn attached to the bracket where the PTO interlock should be...

No. The horn does not sound when the pto is engaged.
 
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