2006 Honda TRX680 Rincon Factory Service Manual, Page 215Get this manual

2006 Honda TRX680 Rincon Factory Service Manual, Page 215

Quality of the image is intentionally reduced!

CYLINDER HEADVALVECAMSHAFT Take care not to tilt or lean the reamer in the guide while reamingUse cutting oil on the reamer during this operation
Remove the valve and inspect the valve seat face