1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 123Get this manual
CYLINDER HEADCYLINDERPISTON CYLINDER INSTALLATION .1 _
Clean off any gasket materia ls from the crankcase surfaceInst all the dowel pins an new gasket-
Avoid piston ring damage during installation
Coa the cy li nde bore and iston wi th eng ine il and instal the cylinder