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sun joe

How to fix the blade ? Not sure I am missing a bolt or screw. Sun joe electric wired lawn mower

The picture shows the mower, the blade and a cap which fits. But if I just put the cap, it will come off

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  • i have that mower. looks like you have all the parts. Unscrew the giant bolt. You will need some extra elbow grease to get the lug off. You'll have to torque it down hard to since your pin is sheared, hey mine too, but it will still work fine. And sharpen that poor blade with a vise and flat file; your grass with thank us.
    – dandavis
    May 19 at 7:32
  • What is the purpose of that heavy washer with the hex inside? Looks like the hex fits onto the head of the bolt. May 19 at 11:01
  • @dandavis, these are all the parts that I have :) I understand that I need to remove the bolt. But the hole on the blade is bigger than the bolt. Not sure how it will stay in. Also with the bolt in place , fact that blade came out means the blade hole was bigger. What do you think ?
    – John
    May 19 at 20:32
  • I think the bolt holds the compression washer that holds the blade. You'll also want a 2-3 foot 2x4 to get it back in; you'll see why when you get to the part about tightening the bolt fully. I put mine through the bottom and out the discharge, then kneel on it...
    – dandavis
    May 19 at 21:47
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The central bolt and washers in the correct order are used to hold the blade to the mounting plate. The pins on the mounting plate, some of which may be broken in your case, fit into the off center holes on the blade so that the bolt need only keep the blade pinned to the plate and the pins support the torque. Inspect carefully. If you have missing or broken pins, your mounting plate or mower need to be repaired or replaced.

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