Suzuki DF25/DF30 Four Stroke Service Manual, Page 139Get this manual
7-22 POWER UNIT Water jackets Check water jacketsIf clogged or obstructed, clean water jackets
CAMSHAFT Cam face Inspect cam face for scratches and wear
Cam wear Using micrometer, measure cam height H09900-20202Micrometer Cam height Standard: DF25 AD ES DF30 AD ES
35.185 35.345 mm 34.506 34.666 mm 36.076 36.236 mm 35.271 35.431 mm
(1.3852 1.3915 in (1.3585 1.3648 in (1.4203 1.4266 in (1.3886 1.3949 in