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| Model LT120D331B
I have tried to research this to no avail. Nothing specific on youtube, or google. Can't find any service manual either. The rubber disc rattles and won't pull any incline. I replaced with a new disc and nothing changed. The disc isn't really mounted to anything. The ID of the disc is larger than the hub and allows it to move up and down over 1/4", so how can it really contact the aluminum disc if there is so much slop in it. I can't really describe it any better. If I press lightly on the bottom of the disc with my finger, it moves up and down over 1/4" Maybe somebody knows of a manual I could look at. |
Follow-Up Postings:
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| "The ID of the disc is larger than the hub and allows it to move up and down over 1/4" "If I press lightly on the bottom of the disc with my finger, it moves up and down over 1/4" Sounds to me like you do not have the liner inside the rubber tired driven wheel. Apparently you have a "Soft Start" clutch which requires the liner inside. You can buy the liner separate but it would have been best to buy one with the liner already inside. Walt Conner |
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| Part # Description Qty 1 7600142 ! KIT, Driven Disc Hub (assembly) : Was 57338 2 7600135 ! KIT, Driven Disc (rubber tire bonded to rim) According to the parts schematic, I have all the parts correct. It doesn't show if part 1 (7600142) has rubber applied to it. I wish I could find some pictorial somewhere. |
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| There are rubber tired driven wheels without the liner used for some mowers, don't give a hoot what the numbers are, you need one with a fiber liner inside the rim of the driven wheel. You don't need a picture to see if there is a fiber liner inside the driven wheel. Walt Conner |
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| I'm on the right track now. Thanks, Walt. |
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| The disc that is now sold, has the inner liner. My Snapper rider is an '83 model, and when i bought a new driven disc for it, i had to remove the inner liner. I was told by the seller of the part (a dealer of Snapper) that i would probably have to remove the inner liner, and i found that to be true. The later ones did need that liner. Also, if you ever remove the big aluminum drive disc from the engine, when you replace it--the face of that disc must be 3 and 7/8th inches from the underside of the plate the engine is bolted to. RJ |
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| I came across a picture that shows the liner and it appears that the liner can be inserted or removed. Looking at the picture, it also appears that the drive disc is the same for both applications. The disc on the tractor that I have, must have lost its liner completely. Learned something new. |
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| While Driven Discs from Snapper Dealers may no longer be available without the liner, they are available aftermarket. I do not remember if I have ever bought one from a dealer. Walt Conner |
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| I was talking with my buddy who works at the Snapper dealership and he said both discs are identical, except that one has the liner inside. It was because with a rear-engine rider, the front ends were lifting off the ground when the clutch was released. Stens sells both types, but they supply the liner and you have to install it. My buddy said that the liner was too wide and he had to trim it. Stens said they would take care of it, but he never bought a liner from them afterward. The liner is about $5, so you now pay extra since only one type is available, need it or not. |
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| The Sten's separate liners did stick out a little on the inside but never bothered anything, there is nothing there for them to interfere with. Maple Grove is the best place for most parts right now. Walt Conner |
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