Hi everyone

So I live on just under 1 acre and have been using a hand me down ride on rover lawn mower for about 3 years now. It's been very reliable, had a few hiccups here & there but other then that I couldn't have asked for a better machine and in all honesty saved me from spending upwards of $1000 like neighboring houses

I wish to keep this machine and spend money if required to fix the issue. I was mowing along and heard a sudden bang sort of sound and the motor instantly turned off, it sounded as though something had been caught where I've circled in black in the below photos.
Now for some reason when ever I try to pull start the mower as per normal, that unit just free spins. I'm at an absolute lost with why it's free spinning, hopefully the photos do it justice, if not I can upload a video maybe?
Any help would be muchly appreciated.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2017/01/full-7392-32262-photo_11.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2017/01/full-7392-32263-photo_22.jpg)
https://s28.postimg.org/itye2xp3h/Photo_11.jpghttps://s23.postimg.org/b4ttqijez/Photo_22.jpghttps://postimg.org/image/b434v748t/3856d54b/Regards MTJ