647 Tiller Slip Clutch Adjustment
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Thread: 647 Tiller Slip Clutch Adjustment

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    TickTock's Avatar
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    647 Tiller Slip Clutch Adjustment

    I've searched the owners manual but am coming up short. Anyone know the slip clutch adjustment procedure for a 647 tiller?

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    Trial and error

    I don't know about that particular piece of equipment but normally you would back off the bolts until it slips. Count the number of turns and do each bolt evenly. Spin the clutch over with the tractor and pto to clear off any rust. Retighten. If it wasn't slipping before when it should I would tighten it a turn or two less than it was and try it. If it's slipping too easily, give each bolt a half turn and go again. Once you get it close you can do 1/4 or 1/8 turns.

    If you can get the specs there should be a compressed spring length to tighten to but even that requires some final tweaking to make sure it will slip when you need it to.

    Treefarmer
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    I had the same concern with my tiller this spring and basically did what Treefarmer posted. I also made lineup marks across the clutch so that I could see if the disks moved/slipped as they should.
    Jim

    1025R...H120 loader w/53" bucket, Piranha tooth bar and Ken's BOH, psrumors seat springs, Frontier AP12F w/42" forks, 60D mower w/autoconnect, Frontier 647 tiller, Frontier SB1164 w/hyd. chute rotation and deflector linear actuator, Frontier ballast box, 72" County Line landscape rake, Fimco 40 gal 3 pt hitch sprayer, Paumco fork spade.

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    gbnpp05's Avatar
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    FWIW
    The picture of your slip clutch resembles the one on my King Kutter tiller.

    Here is the operator's manual for it and page 20 outlines the slip clutch adjustment procedure.

    http://www.ruralking.com/media/blfa_...er_TG-G-60.pdf
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    Brian

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    TickTock's Avatar
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    Thanks for the replies everyone. I'm going to attempt checking this out this weekend.

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    AllenR's Avatar
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    What tractor is it on? On my X750 (24 hp) I found that I needed to take out 4 of the 8 bolts on the clutch. I loosened all 8 of them up so they barely were on the bolts and it wouldn't even think about slipping. I have mine so that 4 bolts have 1 thread showing and it is set perfect. Thats where i would recommend starting if you have a 1R/E or 2R. If I slowly load the tiller it will almost stall the engine, but I got a piece of stump caught in it the other day and it slipped the clutch.
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    Allen

    2014 X750 60" mid mount mower, 54" front blade, 647 tiller, custom trash can carrier.

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    cheesetrain's Avatar
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    On my Landpride tiller the process goes like this:

    Loosen all eight bolts two turns.

    Make a mark across the clutch pack disks

    Start the tractor and engage the tiller for three seconds. Shut off the tiller. Engage the tiller for three more seconds.

    Check your mark. If the marks are still lined up, the clutch pack is not slipping correctly. If the marks are not lined up, tighten the eight bolts two turns.




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    coaltrain's Avatar
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    Not that I am doubting anyone, but I find it odd that Deere wouldn't include the adjustment procedure in the manual.
    ~Stan~
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    TickTock's Avatar
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    Quote Originally Posted by coaltrain View Post
    Not that I am doubting anyone, but I find it odd that Deere wouldn't include the adjustment procedure in the manual.
    Be my guest:

    OMLVU18907_J6



    Frankly the owner's manual I received had the official Deere cover and all. From the outside it looked like a bound Deere manual. Inside it looked like it had been photocopied from other poor photocopies.

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    etcallhome's Avatar
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    Adjusting my slip clutch that came with my Bush Hog calls for compressing the springs to 1 1/8" . Has worked OK for the past 6-8 yrs. Loosen the bolts every year after using the tiller for the season.
    Also before tightening the bolts, turn the PTO ,while tiller is setting on the ground. Let it spin a few turns then turn off the pto. Same after tightneing the bolts and see if it will slip or dig while setting on the ground.
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    Gene

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