Your jack has suffered a major impact and the fork that secures it to the pillar is broken. Follow the step-by-step instructions in this tutorial to replace it. TIP: If you'd like to use a screwdriver; to gain access to the BTR screws at fork level without having to present the BTR head askew and risk damaging the screw recess, assemble two bit extensions together.
Allen wrench, screwdriver
Remove the 4 screw protection rubbers
Unscrew and remove the 4 BTR screws
Unhook the rear fork and remove it completely by passing
it through the cable.
Pass the motor fork back through the cable. Screw it back onto the
crankcase and replace the rubber protectors;
Tip:
Hold the gasket firmly on the fork to prevent it from coming out when
it moves on the cable.
When reinstalling the fork, make sure that
the cable gland is well under the fork.
