Position the gear selector lever with control shaft, spring and plate.
Position the gearbox drum selector fork in the centre of the drum rollers.
Fit the gearbox lever (or a service lever) and the engine sprocket and shift to second gear.
Fit the plate code number 88713.1091 in the fork shaft pins.
Align the notch, in the center of the fork shaft pawl, with the end of the plate (A).
Then tighten the gear selector lever retaining screws.
With the gearbox in the rest position, check that the stroke of the lever during engagement and changing up is the same. The same should apply when the gear is engaged.
Use the gearbox lever and turn the sprocket at the same time to check that all the gears engage during engagement and changing up.
Remove the lever and the sprocket.