Return to the Tractors Forum | Post a Follow-Up

 o
Deck Vibration

Posted by lenc none (My Page) on
Thu, Apr 17, 14 at 15:22

I have a Craftsman 46" riding lawn tractor 4 years old that has a terrible deck vibration, that I would like suggestions to fix the problem. I have mulching blades that I sharpen every year and balance them. There is no play in any of the pulleys or the bearings, mandrel or shaft inside the mandrel. The idler arm does have some play in it but if it didn't the blades wouldn't be able to engage. I can't find any cracks in the mandrels or any of the pulley assemblies that are welded to the deck. The belt looks ok but it is 4 years old. Could the belt be the problem or the blades even though they are balanced? Any help would be appreciated.

Len C


Follow-Up Postings:

 o
RE: Deck Vibration

  • Posted by mla2ofus z4b Caribou Co. Id (My Page) on
    Thu, Apr 17, 14 at 23:03

Belt may have a burnt spot on it if the deck plugged once and the engine continued to run against it which could cause the vibration.
Mike


 o
RE: Deck Vibration

As noted above, belts many times are the source of the vibration. The drive pulley can burn into the sides of the belt , and as the tension is kept on the belt- it gets pulled deeper into the pulley causing the vibration. The 46 isn't necessarily a vibration free deck to start with, but an imperfect blade or belt seems to magnify that vibration.


 o
RE: Deck Vibration

  • Posted by lenc none (My Page) on
    Fri, Apr 18, 14 at 9:46

Now that you mention burning of the belt, I don't really see too much discoloration on the belt, but sometimes when I first engage the blades I see a puff of smoke near front of tractor down low around the muffler and I can smell something like burning. Are there any aftermarket blades or deck drive belts I can purchase with confidence, Sears is high on their deck drive belts?


 o
RE: Deck Vibration

The question would be if the smoke is coming off the belt or a puff of extra emissions from the engine. Take the Sears part number and do a search. Sometimes a regular AYP/ EHP part can be less. Generally Stens belts in this app is good. Same deal with the blades. Stens blades are made stateside now. OEP (oregon) makes a good blade.
I don't know exactly which model you have , but if your deck belt is a 405143- Stens is a 265-106.


 o
RE: Deck Vibration

  • Posted by dennyin Central Indiana (My Page) on
    Mon, Apr 21, 14 at 20:50

Check the engine drive pulley for separation at the deck pulley location. I have seen them begin to separate and cause a vibration.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Tractors Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here