Zenith 28 IF

The Zenith 28 IF has been fitted to a number of R4 models: 680 (747cc), 800 (845cc), 688-C1E (1108cc).

However, there a several variants of the Zenith 28 IF as detailed below.

For the 688-C1E (1108cc) engine, the variants are:

V05 073A(C) .... F6 V05 078(A)(P) .. GTL V05 082 .......... F6 and GTL V05 83 ............ F6 V05 902 .......... F6 and GTL V05 080 .......... GPL

(Sources: Haynes manual, la4ldesylvie.fr)