Hi Ron, welcome to Outdoorking.
I suggest you begin by reviewing some past threads:
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=49306&Searchpage=1&Main=8596&Words=%2Bcork+%2Bclutch&Search=true#Post49306
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=47417&Searchpage=1&Main=8345&Words=%2Bcork+%2Bclutch&Search=true#Post47417
If you have questions as you read them, just post them here. Our SB45 guru, Deejay, is interstate at present but posts as often as he can.