Yamaha AvantGard N3 Maintenance Handbook page 34

N3
4. Adjustment Procedure
4-1 Using buttons with an optimal shape, install the fall board rubber buttons A thru C at the top board (F) assembly
dedicated service part (C) positions.
• With the top board (F) closed, select the most suitable one so that there is no more than 1 millimeter deviation
in the gap between the front beam and the rubber button (E).
4-2 Close the top board (F) and check that the top board front is not unseated upwards.
(Shipping criteria: (E) Within 1 mm)
• If unseated upwards then reselect the rubber as in 4-1.
D
4-3 Securely glue each of the rubber buttons while taking care so that the adhesive does not protrude out from the
coated surfaces.
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Fig. 2 Rubber installation positions
E
Fig. 3 Check points