Starting Issues on 2009 Royal Star Tour Deluxe

[Honerism]

I own a 2009 Royal Star Tour Deluxe S. It is a weekend rider for short trip and only has 7500 miles on it. It has been meticulously maintained and I've never had an ounce of trouble with it. I recently experienced a starting issue where I heard a loud "clunk" like metal hitting metal when attempting to start and then the motor would not turn. The solenoid would click, but the engine did not turn. I thought my battery had lost charge, so I put it on the charger overnight. The next day, she started fine. After a handful of rides, the issue repeated itself. Again, thinking my battery was low, I put it on the charger and it started fine the next time. Unfortunately, it happened a third time and the solenoid clicks, but the motor will not turn even after a battery charge. I had the battery load tested and it passed with no issues. I replaced the solenoid, but that did not help. After reading through a few posts, I am thinking it might be my starter clutch. Perhaps something has broken internally and not allowing the motor to turn? I would like some advice on how I could diagnose the root cause to ensure I am fixing the right problem. If it is the starter clutch, is it a repair that I can do myself and are there any available instructions?

Thanks in advance for your help!

[RDawson]

Pull the plugs and see if it’ll turn. Check the oil to see if it’s full of gas to Rule out a hydrolock situation. 

[luvmy40]

Hydrolock was the first thing that came to my mind. Doesn't that usually bend a rod instantly?

[RDawson]

8 hours ago, luvmy40 said:

Hydrolock was the first thing that came to my mind. Doesn't that usually bend a rod instantly?

I think it depends if another cylinder fired with that one going up on compression stroke, that’s the big clunk. They’ll sometimes run for a little while until the bent rod lets go, often opening an inspection hole in the block. 

[vzuden]

I had one hydro lock but fortunately the piston with fuel must have been at TDC so no clunk and no damage,   Took the plugs out and it sprayed fuel all over when it turned it over,

[Honerism]

Thank you everyone for your feedback and suggestions. I drained and replaced the oil this morning. It definitely had some gas in it. I refilled with fresh oil and changed the filter. Then I moved on to removing the tank and pulling the plugs. Right rear plug appeared wet, the others were dry. I tried to turn the motor with the plugs out, but it won't turn. Solenoid clicks. Also, can't seem to get it into first gear. Not sure what to do next, but this is more than a carb problem. Any suggestions for next steps?

[Marcarl]

On the left side of the engine there should be a cover for the stator, in the middle of that cover should be a large chrome srewcap, (flat head). Take out that screw cap behind it will be a nut. That nut is on the end of the crank shaft. See if the engine will turn over by turning the nut. With the plugs out it should turn easy. No gasket needed, it has a rubber seal.

[Honerism]

Tried to turn by hand with no luck.