Valve Guide Seal: Service and Repair

VALVE OIL SEAL
1. Remove accelerator wire.
2. Remove rocker cover.
3. Remove camshafts and sprockets.
4. Remove spark plugs.





5. Install air hose adapter into spark plug hole and apply air pressure to hold valves in place. Apply a pressure of 490 kPa (5 kg/cm2, 71 psi).
6. Remove rocker arm, rocker arm guide and shim.





7. Remove valve spring with Tool. Temporarily install camshaft as shown.
Piston concerned should be set at TDC to prevent valve from falling.





8. Remove valve oil seal with a suitable tool.





9. Apply new engine oil to new valve oil seal and install it with Tool.