How much tooth wear is too much

[SousaKerry 502]

Ripped apart my Ranger tranny and started to examine everything, apparently the last owner liked to slam shift the thing so the question is how much wear on the input gear is too much, before it should be replaced.

 

 

[racinfool40 202]

In my opinion thats not to bad....And I say that because that gear right there is getting next to impossible to get or find in good condition..If its going to be just a ride around tractor and not see alot of heavy use I would re-use it unless you have another laying around....Right there is a good reason to STOP before shifting..Thanks for the pics!