To lock in the head, use an M2x4 flat head screw to lock the servo shaft and the servo arm from the bottom side of the chassis.
7.2 Limbs(upper and lower legs)
Use the M2x4 flat head screws to lock all the limbs.
7.3 Wire shield
There’re two snaps on both sides of the wire shield. Their relative height is different.
Flatting the wire of the lower leg to remove any coils. Then snap the wire shield to the upper leg.
The edge of the shield should be parallel to the surface of the upper leg.
You may need to recalibrate if more or less weight is put on Bittle or the center of mass has been changed.
Below shows the wrong installation configuration.
7.4 Body cover and tail
The 6-pin female socket is used for connecting the programmer and communication dongles. Carefully bend it forward in a smooth arc if you are not going to attach a Raspberry Pi.
Attach the tail to the pin on the cover.
Snap the cover from one side of the body. Organize the wires so that they don't get stuck between the cover and the body. Then push the cover down to the other side of the body. You should hear a clear snap sound.