JD 420 shaking

   / JD 420 shaking #1  

bobag

New member
Joined
Jul 4, 2011
Messages
1
Tractor
John Deere 420 Lawn tractor
While mowing today, my 420 lawn tractor started shaking. I thought it might be mower deck related so disengaged it. Tractor continued to shake. Then thought it might be because of a bad spark plug. Changed them and the engine starts better now but it still has the shake. Suggestions on what to try or look for are appreciated.
 
   / JD 420 shaking #2  
You may want to check your driveshaft u-joints. when they start to go, the tractor will shake while running.
Tony
 

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