Needle breaks due to bobbin case slippage. How do

You CAN fix timing. Of course, it's up to you, but this is how to do it (I have over 30 years experience)...1. Remove the bobbin case. 2. Unthread your machine and put a fresh needle all the way up a's far a's it will go into the needle clamp, flat side flush against the needle bar. Tighten screw. 3. Set your machine on straight stitch, length at 6, and position needle at Center. 4. Remove the shuttle race ring and turn the handwheel a tad over 1/16". Observe the position of the point of the hook. It should be directly 1/16" behind the needle and pass a tad above the needle's eye. Put a drop of sewing machine oil (NEVER use cooking or bath oil! So many have ruined machines tinkering with improper oil!) on hook point CAREFULLY because that point is quite sharp. Use lint brush and gently sweep out any threads that may have broken off and got stuck in that area of machine.
Jimmy

The maintenance section of your instruction book shows how to install the bobbin case. Be sure the needle is at it's highest position to do this.

The bobbin case should never slip once it is properly installed.

If the needle continues to hit the case, the machine needs to be serviced by an authorized Brother dealer if you are the original owner to prevent invalidation of the warranty.

If you try to adjust the timing you could run into additional problems.