Suzuki WagonR+ RB310 Service Manual page 2509

6A1-34 ENGINE MECHANICAL
13) Remove rocker arm shaft bolts (1).
14) Remove exhaust rocker arms (1) and rocker arm spring (2) by
pulling rocker arm shaft to transmission side.
15) Remove O-ring from rocker arm shaft.
INSPECTION
EX IN
Adjusting Screw and Rocker Arm
If tip of adjusting screw (1) is badly worn, replace it.
Rocker arm (2) must be replaced if its cam-riding face (3) is badly
worn.
Rocker Arm Shaft Runout
Using "V" blocks and dial gauge, check runout. If runout exceeds
its limit, replace rocker arm shaft.
Runout limit: 0.10 mm (0.004 in.)