2005-2011 Honda Recon TRX250TE/TM service manual, Page 61Get this manual
MAINTENANCE Turn the crank.shaft counterclockwise using the recoil starter knob, and align the mark on the flywheel with the index mark on the fear crankcase
RECOIL STARTER KNOB
coverMake sure the piston is at TOC on the compression strokeIf the piston is not at TOC, rotate the crankshaft 360 (1 full turn) and align themark with the index mark"
INDEX MARK Check the clearance of each valve by inserting feeler gauge between the adjusting screw and valve