1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 120Get this manual

CYLINDER HEADCYLINDERPISTON Inspect th top of he cy li nder for warpage
SERVICE LIMIT: 010 (0 .004 in)

Do not damage the piston rings during removal
Remove the pisto ri ngs

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