Update on Jinma 6.00×16 tube replacement;
While removing the slow leaking 7.50×16 new replacement tube ,that replaced the original 6.00×16 tube I discover a block of wood lodged between the new replacement tube and tire. That block of wood damaged the 7.50×16 replacement tube.
So as it stands my assessment is that a 7.50x 16 tube will replace a 6.00×16 tube.
Ps,The 16×6.50×8 tube from Tractor Supply will not fit and is much too small. Live and learn !