Cylinder Head Cover; Rocker Arm Shaft - Suzuki GN125F Service Manual

Take off the valve cotters from the valve stem.
11F14 018: Valve spring tools -
Take out the valve spring retainers
outer springs.
Pull out the valves from the other side.
Remove the oil seal.
Removed oil seal should be replaced with a new one.
Remove the spring lower retainer.
INSPECTION

CYLINDER HEAD COVER

After removed the sealant from the fitting surface of the
cylinder head cover, place the cylinder head cover on a plain
plate and check for distortion with a thickness gauge. Check
points are shown in Fig. If the distortion exceeds the limit,
replace the cylinder head cover.
Cylinder head distortion limit: 0.05 mm
09900 20803 Thickness gauge -

ROCKER ARM SHAFT

Measure the diameter of rocker arm shaft.
Rocker arm shaft O.D. (IN and EX): 11.977-11.995 mm
09900-20205 : Micrometer (0-25 mm)
,
inner springs and
:
ENGINE
3-8