Mower Whirling-Whistling Sound When In Self-Propelled Mode

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I have the newest 21" self-propelled Ego mower--the LM2102SP. I mowed a small stretch of grass yesterday to test it out and it worked and sounded fine. However, when I went to finish my yard today, I noticed that whenever I push the self-propel lever to put the mower in that mode, the mower would make a fairly loud whirling sound--the faster the speed setting the louder the whirling or whistling sound. Is this normal? I did not notice it yesterday.
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Zoom Renity

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Posted 5 months ago

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William E Hanson

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Shouldn't be "loud"; the SP gear is probably defective. Get it exchanged at Home Depot.
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szwoopp, Champion

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Loud is a relative term. The SP certainly makes an audible sound that can be heard above the very quiet mower motor.
(Edited)
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Zoom Renity

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I should have said whirring I think, not whirling.  Anyway, wish I could upload a video here so others could hear the sound.  
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William E Hanson

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Post on YouTube and a link here.
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summetj

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The self propel feature makes a higher pitched sound than the normal blade mower motor, but it shouldn't be much louder than the blade mower motor.
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Zoom Renity

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Here is a short video I made to demonstrate the whirring when in self-propelled mode:  https://www.youtube.com/watch?v=Kqa4Qp-csMk&feature=youtu.be
(Edited)
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summetj

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Yah, that sounds about right (your blade motor seems to be quieter than mine, but your self propel unit is about the same noise as mine.)
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szwoopp, Champion

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Sounds just like mine which has been operating perfectly for 3 years.  I think you are all good.  Just a change form what you are used to with gas mowers.
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Ken, Champion

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To echo everyone else, that's exactly how mine sounds.
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Zoom Renity

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Thanks for the responses.  It seemed quieter the first day I used it, but maybe I just was not thinking about the sound as much because I was focused on learning how to use the mower.
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David Hemberger

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The hight pitched sound at high speed seems normal, but if it gets to be more of a growling/grinding noise, then the gear box has gone bad and needs replaced.  Is covered under warranty.
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Matt

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See my extensive and exhaustive research and experience on this exact issue here:

https://community.egopowerplus.com/ego/topics/lm2100sp-self-propelled-gearbox-transmission-louder-th...