Lou:

If most of the tree has no fruit and your grafts have some, by all means leave some fruit. I'd leave as much as those new grafts can safely support. But don't overload them and risk breaking out your handy work.

I guess it depends how strong is the graft union. I had apples on newly grafted scions that were a year old, I left only one apple, and it did okay. However the grafted branch did not grow much that year and the following year.

Bass

Many thanks for the advice. I told him just to leave just one apple on few of the thicker stronger looking grafted branches and take off the rest of them. I know he is curious to see the end results. He claims the tree was planted two years ago and I keep insisting it was three seasons ago. This though me that if I ever graft any more I should include also the date the grafting was done on the tag.
Lou

If I am understanding correctly and those grafts are 3 years old, then if they haven't taken by now there's something wrong with them. I'd expect a three year old graft to hold fruit.

If the tree is three years in the ground and the grafts are brand new, then I'd remove the fruit.

i have a 4 year old sugar sweet cherry tree and i have not been able to bear fruit on it.it pollinate but the wind blows the flowers off the tree.how can i shield my tree from the wind