As an lifer in this business I have seen probably hundreds of good young techs quit. Retaining good techs is should be a major priority of all companies. We have 40+ mechanics here and the average age is mid 50s. With many of us at or over normal retirement age.
With the lack of proper education in our schools now it is up to the industry to train the younger wanabes. I remember many older techs years ago that were afraid to teach the lesser skilled. They were afraid of their job. I learned many years ago if I can teach the young blood something he can do it next time and I can usually do something lighter or easier. I can remember the first really good tip that a senior mechanic, I guess today it should be a senior tech, told me. "Don't try to remember tune up and adjustment specs. There are too many to remember. Just remember where you put the book. It won't forget or remember wrong." I have told every up and coming tech that bit of advice. I have never been afraid of my job, and will always tell the less experienced tech the way I would do it. Don't be afraid to pass on all the personal shortcuts, tips, special tool suggestions, etc. It will only help you in the long run.
Many of the younger techs have not learned to think analytically. Spend time teaching analytical troubleshooting techniques. When diagnosing a problem, explain your thought process. If a younger tech finds the work easier to do they will hopefully stay in the business.
Manufactures and dealers have to get involved with local schools, both technical high schools and colleges. Offer possibly interested high school students field trips to your shop or manufacturing facility.
Supply part time instructors for classes. Work with the schools to help create interest in the world of forklifts.
Remind senior techs that when they help by teaching a lesser skilled tech something, they are not only helping the other tech but helping themselves. Dealers need to make happen, teaching opportunities between senior techs and lesser skilled people. Everyone will benefit.