Suzuki GA413, Service Manual

Page: 335 / 1246

13) Remove exhaust rocker arms and rocker arm spring by pulling
rocker arm shaft to CMP sensor side.
1. Rocker arm (EX)
2. Rocker arm spring
INSPECTION
Adjusting Screw and Rocker Arm
If tip of adjusting screw is badly worn, replace it.
Rocker arm must be replaced if its cam-riding face is badly worn.
1. Adjusting screw
2. Rocker arm
3. Cam-riding face
EX IN
Rocker Arm Shaft Runout
Using “V” blocks and dial gauge, check runout. If runout exceeds
its limit, replace rocker arm shaft.
Runout limit: 0.20 mm (0.008 in.)
Rocker Arm-to-Rocker Arm Shaft Clearance
Using a micrometer and a bore gauge, measure rocker shaft dia.
and rocker arm l.D.
Difference between two readings is arm-to-shaft clearance on
which a limit is specified.
If limit is exceeded, replace shaft or arm, or both.
ENGINE MECHANICAL 6A-29
Item Standard Limit
Rocker arm I.D.
15.985 – 16.005 mm
(0.629 – 0.630 in.)
–––––
Rocker arm shaft dia.
15.969 – 15.984 mm
(0.6287 – 0.6293 in.)
–––––
Arm-to-shaft clearance
0.001 – 0.036 mm
(0.0001 – 0.0014 in.)
0.09 mm
(0.0035 in.)