Q&A for How to Repair a Mower Deck Spindle

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  • Question
    Are the blades/spindles able to turn in both directions?
    Community Answer
    Spindles can turn in both directions, but blades have a specific direction due to one side having a cutting edge.
  • Question
    How do I replace the spindle on a John Deere lawn mower?
    Community Answer
    Just follow the steps in the article.
  • Question
    What should I do if the spindle won't come off?
    Community Answer
    Use WD-40 on the screws, and if that does not work, heat them up with a torch. If that does not work, drill them out, then buy a new spindle and use a thread protector on the screws.
  • Question
    What can I do if my rider will not start but the battery is good?
    Community Answer
    Check your connections to the starter and the solenoid, use a pair of jumper cables and jump the starter. If it starts, you need a new solenoid, if it doesn't, you need a new starter.
  • Question
    Does this work with any brand?
    Community Answer
    Yes, it should work with any brand. The spindle assembly is a fairly common build. It has been used for years by every major brand. Only in a few odd cases will there be a different construction, and in those cases, the best solution will be to replace the entire assembly.
  • Question
    Can going through 5 sets of bearings and 2 spindles be caused by a faulty mower deck spindle?
    Community Answer
    No, you might be hitting roots or something. There is no reason to just be ruining spindles or bearings. Also, make sure you grease them when you replace them.
  • Question
    Why is the spindle squeaking?
    Community Answer
    Make sure it is greased and not dry. If it turns out to be dry, check for excessive bearing wear. The bearings may need to be replaced.
  • Question
    How do I rebuild the spindles on a 1998 zero turn mower?
    Community Answer
    The same way as any other spindle, tap out old bearings and bushings and tap new ones in. Make sure you put everything back in the same order.
  • Question
    Should there be a grease fitting on the middle spindle of the mower deck?
    Community Answer
    Yes. If you clean very good, you may find it was covered with grass clippings.
  • Question
    What should I do if I stripped the threads on the blade spindle?
    Community Answer
    On the old spindle it won't matter. On the new spindle, there are a couple of options. If the damage is slight, you may be able to 'chase' the threads with a screw driver to even them out. Another option is to use the nut for the spindle. With time and patience you can work the nut back and forth to repair the threads. Your best possible option is to use a tap and die set to re-thread the shaft. These can be purchased from most hardware stores (Lowe's, Home Depot, Menard's, Harbor Freight). They can also be rented at some auto parts stores (Autozone, O'Reilly's, Napa). If none of these work, you may have damaged the threads so much that you will need another spindle.
  • Question
    What if I am trying to change a belt on and don't know the sequence?
    Community Answer
    Check the internet. If you can't find it, then pay close attention to belt guards and idler pulleys. If you notice the way it is set up, there is only one way a belt can go on.
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