Snakes will only bite for two reasons. One being because they are hungry and want food and the other one is usually defensive. So if you were feeding him regularly and he is not hungry and he is being handled regularly there should be no reason for him to bite. Sometimes you have snakes that are scared and the only way to fix that is to handle them. so overall the best thing you can do is get him used to you being around and being handled. The more you can be in their and handling him the better it will be. I had a snake that I called :cens0r::cens0r::cens0r::cens0r:head because he was very snappy when he was younger. I still handled him a lot and he ended up being very docile and very tame. The reason why he was like that is he was afraid and thought I was going to hurt him. You have to think any time in the wild something as big as we are goes toward a steak or something it's usually for food purposes. Just continually head of the snake the snake will get used to being handled.