Bell & Ross Tourbillon Airborne BR01 Notice Technique page 7

A. Minute hand
B. Hour hand
C. Power reserve indicator
D. Tourbillon carriage
E. Trust Index
F. Case fixing screws
(nEvER LoosEn)
G. Strap fastener or part fixing the strap to the case
H. Crown
I. Screws fixing the strap to its fastener
j. Screws fixing the fastener to the case
K. Removable caseback
L. Caseback fixing screws
(nEvER LoosEn)
0. Loosen the crown (anti-clockwise)
1. Wind the mechanism manually (clockwise)
2. Set the time (clockwise)
3. Loosen the four screws (I) to dismantle the strap (anti-clockwise)
4. Loosen the four screws (J) to dismantle the strap fasteners (G) (anti-clockwise)
Position the power reserve and Trust Index hands during optimum movement running.
Trust Index
The top section corresponds to high barrel tension: the watch is slow.
The mid-section represents an optimum running zone: the watch is accurate.
The lower section corresponds to low barrel tension: the watch is fast.
Loosen and pull the crown to position 1, then wind the mechanism by turning the crown clockwise
until the Trust Index hand is positioned in the central zone.