I have a Workmaster 55 New Holland, the high/low leaver won’t stay in nuteral so the tractor will start. I hace to keep moving it back and forth to get it to ingauge.
Mine is a 2016 650 hour.The hi/lo range switch on my Workmaster 60 is a known problem and likely the same issue you’re having.
Call your dealer and order two. They are about 25.00. One wire and a 17mm wrench and you’re in business.
I just clicked 500 Hrs on my 2017 model and on the third switch already.