Use a gauge to measure the clearance between fork pin and the slot on the selector drum.
If the service limit is exceeded, determine which part must be replaced by comparing these dimensions with those of new components (sect. 3 - 1.1, Gearbox).
Also check the wear on the drum support pins; these must not show any signs of scoring, burrs, or deformation.
Turn the drum in the crankcase to establish the extent of radial play. If play is excessive, change whichever part is most worn.


Inspection of the gear selector forks
Reassembly of the gearbox shaftsRoutine maintenance record
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Refitting the air filters
Apply universal sealant in the air duct (2) and (6) groove (d).
Fit seal (7) in the groove (d) having care to place it correctly in the relevant
seat so as to avoid abnormal wrinkles.
Pull out the filter cartridge (1) from the seat in the airbox.
Position the rh air duct (2).
Start ...
Horn not working
Fault codes
Dds: horn diagnosis -> short circuit to ground (s.C. Gnd).
Dashboard: the error "claxon" (horn) is shown on the service display. The eobd
warning light activates.
Wiring diagram
Db dashboard connection, s horn button. 5 Blue/white - b/w, 1 red/blue - r/b,
db 19 purple/bl ...