Seiko 7T85 Technical Manual page 11

Double retrograde chronograph
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TECHNICAL GUIDE
After setting the 9 TRAIN WHEEL BRIDGE and 8 PIN FOR TRAIN WHEEL BRIDGE as illustrated below.
lubricate the upper pivots of the following parts:
37
27
34
20
SECONDS COUNTING
WHEEL
33
CENTER WHEEL & PINION
36
26
31
20
35
36 STOP WATCH ROTOR FOR 0 MINUTES,
37 ROTOR,
34 STOPWATCH ROTOR FOR
SECONDS,
35
STOPWATCH
MINUTES (as illustrated below)
Upper pivot of the ROTOR
3
M I N U T E W H E E L ,
COUNTING WHEEL, 20 SECONDS COUNTING
W H E E L a n d
2 7
illustrated below)
Upper pivot of the MINUTE WHEEL
Other portions
/7
Cal. 7T85A
ROTOR FOR
2 6
0 M I N U T E S
S M A L L S E C O N D S ( a s

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