1997-2004 Honda Fourtrax Recon TRX250TE/TM Service Manual, Page 134Get this manual

CYLINDER HEADCYLINDERPISTON Inspect the top of the cylinder for warpage
SERVICE LIMIT: 0.10 mm (0.004 in)

Do not damage the pIston rings during remollsl
Remove the piston rings

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives