1981-1984 Official Honda ATC250R Shop Manual, Page 51Get this manual
ATC 250R
INSTALLATION
Install the cylinder head using new cylinder head gasketInstall the six flange nuts and tighten to the specified torque in crisscross pattern in 2-3 stepsTORQUE: 24-29 N-m (2.4-2.9 kg-m, 17-21 ft-Ib)
CYLINDER HEADCYLINDER PISTON
CYLINDERPISTON
CYLINDER REMOVAL