7. CYLINDER/PISTON K-PIPE 125 Coat the cylinder bore, piston and piston- rings with clean engine oil. Carefully lower the cylinder over the piston by compressing the piston-rings. Install the cam chain guide roller and tighten the roller bolt. Bolt Be careful not to damage or break the piston rings. The piston ring end gaps should not be parallel with or at 90° to the piston pin. Guide Roller Temporarily install the cylinder bolts. Install the cylinder head (page 6-10). Tighten the cylinder bolt to the specified torque. TORQUE: 0.60.9kg-m Roller Bolt 7-8