Suzuki RM250 - Inspection of Cylinder and Piston

CYLINDER, PISTON AND EXHAUST VALVE 6-7
NOTE:
Use the special tool if necessary.
 09910-34510: Piston pin puller
• Remove the conrod small end bearing 4.
INSPECTION
CYLINDER HEAD
• Remove carbon deposits from the cylinder head.
• Inspect the cylinder head for cracks around the spark plug
hole.
• Inspect for cylinder head distortion with the thickness gauge.
 Cylinder head distortion
Service limit: 0.05 mm (0.002 in)
 09900-20803: Thickness gauge
CYLINDER
• Remove the exhaust valve assembly. (6-13)
• Remove carbon deposits from the exhaust port.
• Inspect the cylinder for cracks and replace the cylinder if nec-
essary.
• Inspect the cylinder bore for wear and scratches.
NOTE:
Chrome-plated cylinder bore can not be modified such as boring
and honing.