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JD SICKLE BAR MOWER

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MARK

06-09-1999 12:55:52




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I HAVE A JD PULL BEHIND SICKLE BAR MOWER (I JUST GOT)AND IT IS NOT CUTTING RIGHT.WHEN I START TO CUT HAY WITH IT .THE SICKLE BAR ARM DOES NOT WHAT TO STAY STRIGHT OUT FROM THE UNIT IT WANTS TO SLIDE BACK AND CUT AT A 45DEGREE ANGLE.
THE ONLY AJUSTMENT I SEE IS ARM THAT HAS A SPRING ON IT THAT CAN BE TIGHTEN OR LOESENED.THIS ARM HAS A CHAIN THAT CAN SLIDE UP OR DOWN IT AND THE CHAIN IS HOOKED TO THE SICKLE ARM.SO WHAT IT IS DOING IS THE CHAIN SLIDES UP THE ARM TO THE STOP ON THE ARM AND WHEN IT DOES THIS THE ARM IS CUTTING AT 45DEGRESS .IF YOU TIGHTEN THE SPRING UPIT WILL LIFT THE ARM UP THAT THE CHAIN SLIDES ON
. I HAVE DONE THIS AND IT STILL PULLES UP THE ARM.
SO DOES THIE MEAN I HAVE SOMETHING AJUST WROMG OR IS MY CUTTING BAR NEED OF A SHARPENIND.

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The Red. Mark another tip.

06-15-1999 12:15:58




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 Re: JD SICKLE BAR MOWER in reply to MARK, 06-09-1999 12:55:52  
If you raise your bar up vertically after mowing, make sure to tie up the knuckle joint where the sickle bar hooks into. This will drag along the ground and bend. Been there, done that.



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mark,HEY RED

06-15-1999 21:13:00




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 Re: Re: JD SICKLE BAR MOWER in reply to The Red. Mark another tip., 06-15-1999 12:15:58  
RED ,THE PEICE THAT HOLDES THE SICKLE ARM UP WHEN YOU ARE MOVING IT, DOES IT HOOK ON SOMETIME WHEN THE ARM IS DOWN AND YOU ARE CUTTING,.



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The Red

06-16-1999 11:49:23




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 Re: Re: Re: JD SICKLE BAR MOWER in reply to mark,HEY RED, 06-15-1999 21:13:00  
Yes you can store the bar on the mower. As you are standing at the back of the mower and looking toward the rear of the tractor, there is an eye hook on the left frame up towards the front of the mower. Slide the bar under the working gizmos, hook it on that hook and you should see towards the rear of that frame a clamp you can snap the bar into. Make sure you screw down the nut tight or keep it in your pocket. I have lost one of them along the line.

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Paul Fox

06-10-1999 15:56:41




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 Re: JD SICKLE BAR MOWER in reply to MARK, 06-09-1999 12:55:52  
I'm having a little trouble following your explanation, but here's my guess: Sicklebars have a "breakback" mechanism that allows the bar to "release" and swing back when it hits an obstruction. This gives you a chance to stop before breaking something. The point at which the breakback trips is usually set by adjusting the tension on a big spring. It sounds to me like you need to tighten up the breakback trip spring.

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MARK

06-11-1999 13:30:45




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 Re: Re: JD SICKLE BAR MOWER in reply to Paul Fox, 06-10-1999 15:56:41  
YOU FOLLOWED IT PRETTY GOOD . FOR THAT IS THE TROUDLE THAT I AM HAVING AS SOON AS I STATED TO CUT HAY THE BRAKEBACK ARM "release" . I HAVE TIGHTEN THAT SPRING UP AHOLE LOT AND IT STILL DOES IT.



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Paul Fox

06-11-1999 16:22:12




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 Re: Re: Re: JD SICKLE BAR MOWER in reply to MARK, 06-11-1999 13:30:45  
Okey-dokey. I'm not familiar with the JD #5, so I can't get very specific, but there is probably some sort of toggle or link that the spring is supposed to hold in the "locked" or "overcenter" position. Check all the connections and pivot points on this assembly to see if anything is loose or broken. When I reset mine on my Allis Chalmers mower, it pops back into the locked position with a distinct "snap". I have a buddy from the Tales board (John "The Red" Fritz) that has a JD #5, I can mention your problem to him and see if he'll post some ideas.

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Fudd

06-11-1999 18:44:37




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 Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to Paul Fox, 06-11-1999 16:22:12  
To add to what Paul said the lock part might be worn and not holding even though the spring is tight. You can still get parts and operators manuals for that mower from Deere but I don't know the phone number. Good Luck



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The Red is here

06-12-1999 06:24:11




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 Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to Fudd, 06-11-1999 18:44:37  
If I recall correctly, there is a detent that helps keep the bar in place. I would tighten up the spring more. Make sure to take a surface grinder and sharpen the sickle teeth. If they are dull, the bar will have a tendency to break easily.



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mark

06-14-1999 15:25:05




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 Re: Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to The Red is here, 06-12-1999 06:24:11  
HOW DO I GO ABOUT SHARPENING THE SICKLE TEETH. DO I HAVE TO TAKE THE SICKEL BAR OFF OR JUST ALL THE GAURDS OFF THE SICKLE ARM,



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The Red

06-15-1999 12:13:09




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 Re: Re: Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to mark, 06-14-1999 15:25:05  
Mark I have done it both ways. Pulling the sickle out is A BEAR! I usually just take off every other nose guard and grind. Replace and remove the others. You can grind all but 6 without removing the guards but you won't get a very good angle on the teeth. Either way, I figure 1 to 2 hours. then I know I can get around 20 hours of cutting before sharpening again. My roadsides have rock along the edge and are brutal on the sickle teeth.

BTW, I sheered a tooth off the other day. You can put a new tooth and rivest on without removing the bar. Simply take the nose guard off, put a 4X4 block underneath with some 1/2 steel on top of it so its under your two new rivets. Add the tooth and use a 3 pound sledge to flatten down the rivets. Now if you have a lot of bad teeth, it is easier to remove the bar.

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B.C.

06-14-1999 18:45:26




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 Re: Re: Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to mark, 06-14-1999 15:25:05  
I think that you will find it much easier to pull the sickle out than to leave it in and remove and replace all those guards and retainers. Watch your fingers.



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B.C.

06-12-1999 06:42:58




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 Re: Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to The Red is here, 06-12-1999 06:24:11  
We use a 3 point hitch mounted 9W behind our MH50. One thing that can get you tripping when you don't want it is having the sickle bar itself tipped too far forward so that the rock guards tend to grab the ground,sod whatever. Rotating the sickle bar back a little might help.

That breakaway feature can be a little tiresome if it's not set right, but it sure helps reduce the rock damage when it works right.

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The Red

06-12-1999 07:41:19




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 Re: Re: Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to B.C., 06-12-1999 06:42:58  
Excellent point. that #5 can be adjusted so that that the nose guards don't run into the ground. I think there are about 5 positions or so.



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Peter Thornton

06-24-1999 16:59:19




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 Re: Re: Re: Re: Re: Re: Re: Re: JD SICKLE BAR MOWER in reply to The Red, 06-12-1999 07:41:19  
This is just a shot in the dark. With regard to the apparent missfunctioning of the breakaway mechanism. As someone else commented, there should be a detent in the bar. There will then be a piece under the spring which engages in this detent. Perhaps this piece is missing. It should take a fair jolt to move this when mowing. I must add that i don't know your mower specifically but I have just spent the last day rebuilding a Featherstone and I'm asuming that yours is similar

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