New idea 5209 disc mower knife tic

When you hear a slight tic from your disc mower it could be this. Easy fix. Even a old wore out mower can be tuned up!

[@jerrylansbury9558]

Yes.......Ive owned one now for over 10 years. 90% of the time its the bushing that the knife rides on. And yes...if the shaft is twisted ( normally the one nearest the large inner gear box ) it will change the timing mainly on that one turtle. To get by........Ive just cut the knives shorter.
Fact is....I owned mine for 5 years with a twisted shaft but never knew it.......until it broke off. A new shaft changed everything !

[@chadsharrow9269]

Yes we typically install a new shaft every 2 years. We use a 1 piece shaft that is a bit better material from steel supply house. The segment style does not work out in the long run.
Good luck 👍

[@lloydfloyd751]

Very good information thanks for sharing

[@jerrylansbury9558]

Its not slop in the gears Its the bushing thats the knife wears on. They become worn on one side Remove them and give it a half turn. good to go. And........there is nothing wrong with using a hand grinder and cutting metal away where the knife hits the turtle.

[@chadsharrow9269]

Yes those parts wear also
But the gears wear out after years of use
The knife should never hit the turtle
If it is the timing is off
Meaning the the shaft is worn or twisted
Or the gear where the shaft rides is worn.