Kugelfischer warm-up regulator overhaul & calibration using the 2002FAQ kit.

This shows how to physically rebuild and calibrate the warm up unit on the back of a Kugelfischer mechanical fuel injection pump, as fitted to the BMW 2002 tii. The kit of parts & tools is available from www.bmw2002faq.com, and there are full written instructions over there including how to remove the unit from the car and how to recover the air/fuel tuning after the overhaul.
The wax actuator is believed to be the same in a variety of MFI cars from late '60's & '70s, and the general principles of overhaul and calibration likely the same:
BMW 520i(E12), BMW M1(E26)
Ford Capri RS2600
Peugeot 404, Peugeot 504
Porsche 911/911S/Carrera RS/RSR/Carrera,
Porsche 935
Ferrari 308
Lancia Stratos
Lancia Flavia