Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 324

9) Remove camshaft housing and camshaft.
NOTE:
To remove camshaft housing bolts, loosen them in such
order as indicated in figure, a little at a time.
10) Remove rocker arm shaft plug (1) and timing belt inside
cover (2).
11) Remove intake rocker arm (1) with clip (2) from rocker arm
shaft (3).
NOTE:
Do not bend clip when removing intake rocker arm.
12) Remove rocker arm shaft bolts (1).
2. Rocker arm shaft
13) Push off rocker arm shaft end to CMP sensor case side and
remove O-ring (2) from shaft (1).
ENGINE MECHANICAL (G16 ENGINE) 6A1-33