cannot remove lawn mower blade

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  #1  
Old 05-11-15, 04:22 AM
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cannot remove lawn mower blade

Tried removing the blade on a push lawn mower but the but is so tight I cannot remove it even hitting a spanner with a hammer. Any solutions to take it off?
 
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  #2  
Old 05-11-15, 04:24 AM
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An impact makes short work of it if you don't have access to one, a socket and breaker bar should do the trick. Are you blocking the blade so it doesn't turn?
 
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Old 05-11-15, 04:43 AM
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I use a socket breaker bar and I hold the blade with one hand and the wrench in the other. Pushing with one hand and pulling with the other counteract each other but I change my blades somewhat regularly and grease the bolt threads so they come off moderately easily.

If you're having trouble with your wrench try wedging a block of wood between the blade and deck to prevent the blade from turning. You can slide a piece of pipe over your wrench to make it longer and provide more leverage.

Be mindful that if you have your push mower tipped up on it's side that fuel and oil may leak out. Also, if it's on it's side for more than a few minutes you may have oil seep past the rings and into the cylinder or the carburetor may flow fuel that drains into the cylinder.
 
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Old 05-11-15, 05:05 AM
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Are you sure it is not reverse threads?
 
  #5  
Old 05-11-15, 09:15 AM
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If oil or fuel goes in can I just leave it 30 mins before starting?

What is an impact? Have only seen breaker bars.
 
  #6  
Old 05-11-15, 09:23 AM
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An impact is an air ratchet. It works off of air like the tire shops use to remove lug nuts with for example.
 
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Old 05-11-15, 09:48 AM
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You can also buy electric impact guns.
 
  #8  
Old 05-11-15, 10:14 AM
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Going back to what you have available, you might still be able to get it loose with the tools on hand. My first suggestion is to use a block of wood and/or clamp to prevent the blade from spinning. By using two tools (one in each hand) you are severely limiting the amount of torque you can apply. You have heard terms like "put a shoulder into it". In this case, the way you can postion yourself when you only have to hold one item is very different. Consider loosening a lug nut on your car. If you have to hold the rim from rotating with one hand while applying pressure with the other, how much pressure/torque can you really apply? If you let the car's brakes, gears and weight hold the car in place on the ground, then you can use your entire body weight on the breaker bar to loosen the nut. If you need even more leverage, slide a length of pipe over the end of the breaker bar to create a longer lever.

- Peter
 

Last edited by pjaffe; 05-11-15 at 10:15 AM. Reason: took me so long to type it up, I duplicated part of the prior answer.
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