Date :
1.How to replace the battery
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Please use the specified battery to keep the stable performance for a long time.
・
Please install the minus part of the battery towards inside of the watch.
・
・
Install the battery under the circuit cover as illustrated below Fig.[1] and Fig.[2].
・
System-reset is not required.
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2.How to remove the stem
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3.How to set the hands
・
・
Do not turn the hand forcibly.
4.How to remove the hands
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When removing the hands, use exclusive fork-shaped tools.
・
Do not remove the dial under the condition that any hands are set.
5.How to test the accuracy
When measuring the time accuracy, use specified Quartz Tester and change the gate time in 10 seconds.
When removing the stem, pull out the crown at 1st click position and then remove the stem while
pressing the hollow portion of setting lever by tweezers. (Refer to the Fig.[3].)
Each hand moves at step interval. Set the each hand at correct position according to the scale on the
dial in order not to make a mistake in reading time.
When installing or changing the battery, it is recommended to remove two battery clamp screws first,
then remove the battery clamp not to damage the movement parts.
If you install the battery without removing the battery clamp, please install the battery from [
→
] direction
as illustrated below Fig.[1].
After installing the battery, set the current time and then set the 1/20 second chronograph hand,
second chronograph hand and hour/minute chronograph hand at "0" position.
Cal.
YM92A
Attention for assembly
15/Dec./'17
Rev. : 03
A
Battery
Battery clamp
Circuit cover
Fig.[2] A section
Fig.[1]
Fig.[3] Crown pulled out at 1st click
P.8
