Suzuki Grand Vitara XL-7 Service Manual page 303

ENGINE AND EMISSION CONTROL SYSTEM (RHZ ENGINE) 6E3-25
5) Disconnect return hose (1) from injector.
6) Remove high pressure pipe.
When loosening union nut of high pressure pipe, hold union nut
of injector with wrench as shown.
Special Tool
(A): 09950-76510/OUT0000148
7) Remove nut (1) and washer (2), then remove injector (3) with its
clamp (4).
NOTE:
If the injector cannot be removed, remove the stud bolt (5)
by using stud bolt remover then, using an opened spanner,
turn the injector at "A".
8) Remove sealing ring (6) and copper seal (7).