SharePoint 2013 Search =>Increase CutoffMaxBuckets size of the refiner
As we know by default refiner cut off max bucket size is 1000. So what if some time we as the developer wanted to increase it or having a requirement where we have more than 1000 refiners values.
In this scenario, if you want to increase the size of the refiner you need to update the managed property by using the following powershell command.
Full PowerShell code download from Github gist.