1986-1987 Honda Fortrax TRX70 Service Manual, Page 65Get this manual
CYLINDER PISTON Clean the cylinder gasket surface being careful not to drop any
gasket material into the crank.case
PISTON INSTALLATION
Apply molybdenum disulfide grease to Inside of the connecting rod amall endInstall the piston, piston pin and clip
Install the piston with the marX facing the exhaust sideDo not align the piston pin clip end gap with the piston cut out