Hard to start

Hello.
I have 914F engine on S6-T Glider 

The engine has now just 200 hours and have experienced starting problems lately.
Carbs, batteries etc are checked and I suspect that the Sprag Clutch is damaged.
It certainly sounds like as the starter is only engaged for a few revolutions and then disengages from the crankshaft and continues to turn and then engages again when the starter rpm reduces close to zero.
This last engagement sounds really bad.
Like the sound from a car manual gearbox when one tries to shift gears without using the clutch.

Before I take the engine apart I would like to know if any of you knows if there is a way to check if the Sprag Clutch is damaged?

Any comment is welcome at this point.

Refards

Naveed