NB: These data are given for guidance only and cannot engage the author's liability in the event of misinterpretation, failure to assess the vehicle's actual condition and/or non-conformity, unsuitable mechanical practice or the use of inappropriate tools.
Valve-clearance shim calculation sheet — Laverda 1000 and 1200. Target clearances: 0.20 mm inlet, 0.25 mm exhaust.
Method
For each valve:
- Difference = measured clearance − target clearance.
- Required shim = fitted shim − difference.
A blank printable sheet (cylinders 1, 2, 3) can be downloaded via the PDF button.
Example
| Inlet | Exhaust | |
|---|---|---|
| Measured clearance | 0.35 | 0.15 |
| Target clearance | 0.20 | 0.25 |
| Difference | − 0.15 | + 0.10 |
| Fitted shim | 2.32 | 2.40 |
| − difference | −(−0.15) = + 0.15 | −(+0.10) = − 0.10 |
| Required shim | 2.47 | 2.30 |