7. CYLINDER/PISTON Downtown 300i ABS PISTON INSTALLATION Remove any gasket material from the crankcase surface. · Be careful not to drop foreign matters into the crankcase. Install the piston, piston pin and a new piston pin clip. · Position the piston "IN" mark on the intake valve side. · Place a clean towel in the crankcase to keep the piston pin clip from falling into the crankcase. CYLINDER INSTALLATION Install the dowel pins and a new cylinder gasket on the crankcase. Piston The piston must be changed in pair with cylinder. 7-7