1984 Official Honda TRX200 Shop Manual, Page 82Get this manual
CYLINDERPISTON
PISTON INSTALLATION
Install the piston and piston pin, using new piston pin clipsNOTE: Position the piston "IN" mark on the in take valve sideDo not align the piston pin clip end gap with the piston cutoutDo not let the clips fal into the crankcase
CYLINDER INSTALLATION
Install new gasket and dowe pins_
DOWEL PINS