Question about Mtd Riding Mowers & Garden Tractors

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21hp Yard Machine

This machine vibrates when engaging the cutting blades.
Can't ride it, too much vibration.

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Did you recently hit something while mowing? if you did chances are that one of the blades are out of balance or the shaft is bent

Posted on Sep 15, 2008

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Lawnflite 908lh has excessive vibration when mowing,engine runs fine-machine is brand new,and engagement is via tensioner on the cutting deck,not a pto.


Jerry, could be a bad belt, pulley, blade,etc. Take back to place of purchase for repair under warranty.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
MTD Products
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http://www.ssbtractor.com/wwwboard/view_all.cgi?bd=lawn&msg=1098

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1 Answer

Excessive vibrating


Exsessive vibration is normally attributable to the mower deck. If the vibration is occurring while the blades are engaged and cutting this would indicate a need for further investigation. Check the blades for damage or uneven ware. If the blades are new or appear in good shape check the mandrals and shafts to ensure they are not Brocken or bent. You can get mandrel assembly's for around $60.00 online and replace all you need in one go.

Jun 14, 2014 | Husqvarna Riding Lawn Mower 46 Cut Kohler...

1 Answer

Vibrating 38" deck on MTD yardman mower


Hi, first replace the blade spindle bearings, if you had to hit them to free them up the bearings are shot. Secondly, replace the deck belt. Because you engaged the blades with a siezed bearing the belt will have a worn section where the v will be thinner thus causing the vibration as it passes through the pulleys. Regards Phil.

Jun 19, 2012 | Mtd Riding Mowers & Garden Tractors

2 Answers

Murray Select 16.5 hp OHV 42


is one of the blades bent?is one of the bearing s seized or binding

Apr 16, 2012 | Briggs & Stratton Riding Mowers & Garden...

1 Answer

Honda HR215 hits stump - still runs and cuts but engine vibrates when running IF the BLADE IS NOT TURNING.


you could have bent the blade or the crank look at the blade then remove the blade mount and spark plug turn on its side and turn the engine over and look for crankshaft runout

Apr 07, 2012 | Riding Mowers & Garden Tractors

1 Answer

Very bad vibration when engaging the blade


Bad vibrations when engaging blades is usually caused by an out of balance blade. Out of balance blades occur due to damaged and/or bent blades. The fix is to find and replace the offending blade.

Jul 19, 2011 | Husqvarna Riding Lawn Mower 46 Cut Kohler...

1 Answer

Excessive vibration when blades are engaged. No visible problems. Started after a rag wrapped around one blade.


If it started when a rag wrapped around the spindle mandrel? You may have damaged the mandrel. Check where they bolts onto the deck, if the mounts are damaged, this could give you the vibration. You could also have done something as simple as bent a blade.

May 28, 2011 | Husqvarna 23 Hp 48" Deck Yard Tractor

1 Answer

VIBRATION-THRU SEAT & FOOT RESTS AFTER ENGAGING BLADE


get down and gun your fingers in the slot that the belt rides in, soulds like you may have a small rock or piece of wood lodged in the v part of one of the pulleys. I bet thats it Jim

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