Cylinder Head Distortion - Suzuki UY125 Service Manual

• Remove the valve stem seal 9 and valve spring seat 0.
ROCKER ARM SHAFT O.D.
Measure the diameter of rocker arm shaft.
& Rocker arm shaft O.D. (IN. & EX.)
Standard: 9.981 – 9.990 mm
$ 09900-20205: Micrometer (0 – 25 mm)
ROCKER ARM I.D.
When checking the valve rocker arm, the inside diameter of the
valve rocker arm and wear of the camshaft contacting surface
should be checked.
& Rocker arm I.D. (IN. & EX.)
Standard: 10.003 – 10.018 mm
$ 09900-20605: Dial calipers

CYLINDER HEAD DISTORTION

Decarbon the combustion chamber.
Check the gasketed surfaced of the cylinder head for distortion
with a straightedge and thickness gauge, taking a clearance
reading at several places as indicated. If the largest reading at
any position of the straightedge exceeds the limit, replace the
cylinder head.
& Cylinder head distortion
Service Limit: 0.05 mm
$ 09900-20803: Thickness gauge
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ENGINE 3-23