Originally Posted by Bruce
Hi thomas18,

The pin is no longer available but you can buy the engine side and it depends on the engine shaft size as to which one you purchase.
It's still available.
I've purchased them as recently as this year.
https://www.tridentlawnmowers.com.au/product-page/cotter-pin

I do prefer the clutch that doesn't use them though because I find them a bit awkward in their design.