CYLINDER HEAD/VALVE VALVE GUIDE REPLACEMENT Heat the cylinder head to 100°C (212°F) with a hot plate or oven. CAUTION: • Do not use a torch to heat the cylinder; it may cause warping. • To avoid burns, wear heavy gloves when handling the heated cylinder head. Support the cylinder head and drive out the old guides from the combustion chamber side of the cylinder head. VALVE GUIDE DRIVER, 5.5 mm 07742-0010100 VALVE GUIDE DRIVER 07942-3290200 or 07742-0020200 Drive new guides in from the rocker arm side of the cylinder head. NOTE: 1 Cylinder head heat should still be at 100°C (212°F) for installation of the new guides. VALVE GUIDE REAMER 07984-2000000 NOTE: • Use cutting oil on the reamer during this operation. Rotate the reamer when inserting and removing it. Reface the valve seat (page 10-14) and clean the cylinder head thoroughly to remove any metal particles. Let the cylinder head cool to room temperature and ream the new valve guides. 147 Date of Issue: October, 1982 © HONDA MOTOR CO., LTD. 10-13