Valve Clearance: Testing and Inspection

VALVE CLEARANCE INSPECTION [MZR 2.5]

1. Disconnect the negative battery cable.

2. Remove the plug hole plate. Service and Repair

3. Remove the ignition coils. Service and Repair

4. Remove the ventilation hose. Service and Repair

5. Disconnect the camshaft position (CMP) sensor connector.

6. Disconnect the oil control valve (OCV) connector.

7. Remove the cylinder head cover. Service and Repair

8. Set the front mudguard (RH) out of the way. Service and Repair

9. Remove the splash shield (RH).

10. Measure the valve clearance.
NOTE:
- Make sure to note down the measured values for choosing the suitable replacement tappets.

a. Turn the crankshaft clockwise so that the No.1 piston is at TDC of the compression stroke.

b. Measure the valve clearance at A in the figure.

- If the valve clearance is out of the standard value, adjust it. Adjustments





Valve clearance [Engine cold]
- IN: 0.22-0.28 mm {0.009-0.011 in}
- EX: 0.27-0.33 mm {0.011-0.012 in}

c. Turn the crankshaft 360° clockwise so that the No.4 piston is at TDC of the compression stroke.

d. Measure the valve clearance at B in the figure.

- If the valve clearance is out of the standard value, adjust it. Adjustments

Valve clearance [Engine cold]
- IN: 0.22-0.28 mm {0.009-0.011 in}
- EX: 0.27-0.33 mm {0.011-0.012 in}

11. Install the splash shield (RH).

12. Install the front mudguard (RH). Service and Repair

13. Install the cylinder head cover. Service and Repair

14. Connect the OCV connector.

15. Connect the CMP sensor connector.

16. Install the ventilation hose. Service and Repair

17. Install the ignition coils. Service and Repair

18. Install the plug hole plate. Service and Repair

19. Connect the negative battery cable.