Correct valve clearances are in the range given in the table below.
| Inlet | 0.10 to 0.15 mm |
| Exhaust | 0.15 to 0.20 mm |
Note: Valve clearance adjustment must be carried out with the engine cold.
1. Remove the cam cover (see page 3.5).
2. Remove a spark plug from each cylinder to reduce compression resistance when turning the engine.
3. Select a high gear and, using the rear wheel, turn the engine over until a pair of camshaft lobes are positioned pointing directly away from the valves.
4. Using feeler gauges, measure and record the clearances for this pair of valves only.
5. Repeat the process until the clearances for all valves have been checked.
If any of the recorded clearances fall outside the specified range, adjustments must be made. If all measured clearances are within tolerance, refit the cam cover (see page 3.6).