Fw 190 A-8 Primer Fuel Fill Point

[Leo Etgen]

Hello

Would anyone have the time period and/or werknummer batch when the primer start system began to be installed on the Fw 190 A-8? Looking through photographs of early production Fw 190 A-8 fighters does not show any evidence of the associated primer fuel fill point on these aircraft. Examples of these machines include:

Fw 190 A-8 "Black 13" (W.Nr. 170 346) of Stab/JG 26 flown by Oberstleutnant Josef Priller
Fw 190 A-8 "Blue 10" (W.Nr. 730 414) of 4./JG 26 flown by Oberfähnrich Wolfgang Rose
Fw 190 A-8 "Red 19" (W.Nr. 172 733) of 5./JG 300 flown by Unteroffizier Ernst Schröder
Fw 190 A-8 "White 10" (W.Nr. 732 197) of 9./JG 5 flown by Oberfeldwebel Rudolf Artner
Fw 190 A-8 "Black <-" (W.Nr. 170 935) of Stab/JG 76 flown by Major Anton Hackl
Fw 190 A-8 "Black 3-" (W.Nr. 732 047) of Stabsstaffel/JG 51 flown by Unterffizier Helmut Johne

In the Fw 190 A-8 handbook effective July 1944 this system is described but not included in the list of innovations introduced by the sub-type such as provision for auxiliary tank in rear fuselage, FuG 16 ZY and relocated radio compartment, forward placement of ETC 501, vertical speed indicator, provision for BKS 16 gun camera and capability for BMW 801 TU as well as Erhöhte Notleistung. The Focke Wulf Jagdflugzeug book by Peter Rodeike mentions that this system began to be installed in the middle of 1944 but could anyone be more precise? Any help would be appreciated.

Horrido!

Leo