If you were very, very lucky you might once in a blue moon not loose it......... chances are it will drop down. You'll have to pull the clutch out to get at it. If your bike hasn't had the primary opened in 10K or more miles you may as well plan on doing a bit of maintenance on everything else inside the primary cover. Why not back PD11 out a bit and put some #2 Permatex on the threads?
Cheers, John