NB: These instructions 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.
Adjusting the gearbox selection — Laverda 750, 1000, 1200 (right-hand lever). Note: the RMT workshop manual contains a few errors; use the method below instead.
- Put the gearbox in neutral.
- Align the marks on the selector shaft with the mark on the casing.
- Remove the washer at the end of the selector spindle to see the ends of the small pins.
- Turning the wheel back and forth, put the gearbox into 4th gear. In 4th, one pin sits near the upper finger and another near the lower finger: it is then very easy to adjust the eccentric to get the same distance top and bottom.
- Make sure the large return spring is the right way round: bent part (dog-leg) up, legs spread. No washer behind the spring. On some re-made springs it can help to bend the leg slightly if it tends to jam in the mechanism's sector.
- Adjust the eccentric to get the same distance top and bottom between the selector fingers and the pins. An eccentric often has two possible positions: choose the more forward one (largest movement).
- Carefully remove the mechanism and tighten the eccentric lock-nut while holding it firmly in position.
- Refit the mechanism and try every gear by turning the wheel. If all is correct, refit the washer on the spindle (in front of the spring) and refit the cover.
- Fit the O-ring in the outer recess of the cover, then the washer and the lever.
Sometimes, especially with mismatched crankcases, slightly loosen the case screws and shift the case with a mallet (often forward), or even polish the selector-spindle bore for completely free selection, then progressively retighten everything.
Order of parts (inside to outside)
- Selection mechanism
- Selection spring
- Spring backing washer (sometimes min. 1.5-2 mm thick to position the spring correctly)
- Selection cover
- O-ring
- Washer
- Selector lever