operating handle is an integral component of
the blade assembly which provides direct control
of the blade, with an external indicator showing
operate the handle and blade assembly, first
ensure that the thermal link cartridge is loose,
then rotate the handle to the desired position.
Tighten the thermal link cartridge until contact is
made with the regulating cam ensuring the
cartridge locates a slot, then finally tighten the
locking nut to the case.