Jx 75 clutch removal

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  #1  
Old 08-07-07, 05:39 AM
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Jx 75 clutch removal

Searching for information on removing the clutch of John Deere JX 75 self propelled mower series o20000-030000 Please Help Thanks
 
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  #2  
Old 08-07-07, 08:04 AM
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Are you talking abouth the blade clutch?
 
  #3  
Old 08-07-07, 08:59 AM
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Jx75

Originally Posted by smallengineguy View Post
Are you talking abouth the blade clutch?
yes its the only clutch i know of thanks for reply
 
  #4  
Old 08-07-07, 09:43 AM
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Just did one on a JX 65, basically same thing. Remove 2 blade bolts and crankshaft bolt. There is a high tension spring going from lever on BBC to bracket mounted under deck. The bracket on deck has 2 screws. Remove the inside one and loosen the outside one. This will allow bracket to "swing" and remove spring. When installing spring you can connect spring to bracket and with long screwdriver pry bracket over until 2nd hole aligns and install screw. If you reoved bracket it would be very tough to install. There is a long bolt that goes up through deck and clutch which needs to be removed. When trying to slide BBC off I found the lever that connects to cable was preventing BBC from dropping and I had to loosen engine bolts 1/2 way to be able to tip engine in order to remove at an angle. BBC will drop off crankshaft and new one installed in reverse order. Should be an hour job.
 
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Old 08-07-07, 09:57 AM
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Thanks for responding im definitely not a mechanic,but how do I remove the crankshaft bolt. It has an allen head at bottom of clutch. Thanks
 
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Old 08-07-07, 10:51 AM
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How is the crankshaft removed from a motor
 
  #7  
Old 08-07-07, 05:08 PM
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The engine is disassembled and the crank is removed. Depends on the engine as to the exact procedure, but the short version is pull the block and remove the flywheel, pan, cam and pull the cap off the rod. Then the crank can come out.
 
  #8  
Old 08-07-07, 06:41 PM
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John Deere JX 75

I am trying to remove the blade clutch from the JX 75 the clutch is still on the crank shaft just trying to find out how to remove the flywheel and crankshaft to remove the clutch
 
  #9  
Old 08-07-07, 07:15 PM
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I think you are working on the wrong end of the crankshaft, go under the deck and start removing stuff, however, start with the plug wire first, then blade and work your way up. Have a nice one. Geo
 
  #10  
Old 08-07-07, 07:24 PM
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Jx 75

What should I use to keep the crackshaft turning
 
  #11  
Old 08-07-07, 07:52 PM
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Rodney, I see you have started another post on this, it is best to keep it to one post that way others can follow the progress of your project and jump in accordingly.

You need to remove the crankshaft bolt which is a hex (allen) head. It is best to have one that is on a 3/8 drive socket to get the leverage you will need. It is not practical to use just a small allen wrench, although I have done it.

In order to loosen this you will need to secure the flywheel. To do this you must remove engine cover (4) bolts and expose the starter cup. You can use a strap wrench or I have used a large 16 or 18" pipe wrench. It is possible to do alone but easier if you have someone on top while you loosen the crank bolt. As mentioned in the 2nd post be sure spark plug is disconnected.
 
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Old 08-07-07, 10:56 PM
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I merged these threads into one. Please use the reply button to reply to a thread rather than starting a new one for each question. This way we can keep track of what we're talking about. Thanks.
 
  #13  
Old 08-08-07, 04:09 AM
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Jx 75

Thanks smallengineguy this is great help. Most forums want new threads so everyone can see, but i will remember
 
  #14  
Old 08-08-07, 08:44 AM
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Jx 75

I used to be in lawn care business and would always take breakdowns to mechanics like you. I have three JX 75 mowers and one has a bad vibration thinking it may be the whole crankshaft thats why I was trying to get tips on safely removing it
 
  #15  
Old 08-08-07, 08:56 AM
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I recently found from one of these forums the easiest way to "lock" the engine so you can remove stuff like crankshaft bolts and flywheel bolts is to remove the spark plug get the cylinder to the bottom of the strok and fill the cylinder with a small rope, like an old starter pull rope, then as the cylinder moves up, comes in contact with the rope, engine is locked and nothing gets broken, when finished remove the rope. Have a good one. Geo
 
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Old 08-08-07, 10:14 AM
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jx75

Thanks I was given the same instructions
 
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