Parts Question
I have the lawn mower for at least 2 years and sharpen the...
Parts Question posted September 15, 2017 by Paul Haneline
29 Views, 2 Comments
Question:
I have the lawn mower for at least 2 years and sharpen the original blade at least 4 times and putting the blade back on with no problems. Now, I took the blade off for the last time and the part number "581 85 15-01 Blade Adapter / Pulley" teeth all broke off.
So I ordered a new one. As soon as I started the mower up the new pulley started to hit the other pulley in the mower. So I stopped it and took off the blade. Now, the teeth for holding the blade broke as well.
So I ordered another one. The second new pulley didn't hit the other pulley. Which was good. But now it made another noise, so I stopped the engine and as soon as it slowed down the blade feel right off and the teeth are broken again. The bolt I can still tighten, meaning the threads are still ok.
The design may put too much stress on the teeth that make sure the blade turns with the engine. This is the 3rd pulley that broke along with the original one that didn't break for at least a couple of years after I got the mower.
So I ordered a new one. As soon as I started the mower up the new pulley started to hit the other pulley in the mower. So I stopped it and took off the blade. Now, the teeth for holding the blade broke as well.
So I ordered another one. The second new pulley didn't hit the other pulley. Which was good. But now it made another noise, so I stopped the engine and as soon as it slowed down the blade feel right off and the teeth are broken again. The bolt I can still tighten, meaning the threads are still ok.
The design may put too much stress on the teeth that make sure the blade turns with the engine. This is the 3rd pulley that broke along with the original one that didn't break for at least a couple of years after I got the mower.
Details:
The one on the left is the original that came with the mower and the one on the right is the 2nd new one. Both broken.
Photo:
Answer
Are you torquing the 3/8-24 grade bolt to 45-55 ft lbs? Just hand tightening without using a torque just won't do. This applies to a dry non lubed bolt.
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No, but I did get another part again and I did get a torque wrench. As soon as I get both I'll use the wrench.
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