How do I change the day, date, etc. It has 3 stems and 3 dials, BUT only a single detent on main stem

If you have only the stem to set your watch, then you have very few options.

I would expect your watch crown (stem) to have three positions;-

1) The home (normal position); this is used to wind the watch.

3) Fully out; this one is usually for setting the time; clockwise to advance and anticlockwise for retarding the the hands.

2) Between 1) and 3); this setting should be for setting the day of the week and the date. You will have to experiment to find which way tor turn for date and day.

mcdevito75 here, The stem should be 2 position, first pull the stem out to adjust the DAY ot Month, push the stem back in, now slip a fingernail just under the stem anf lift to the stems first position, this should allow you to change the DATE, adjust to 1 day before the DATE you need, now lift the stem to adjust the time, go thru the complete 24 hour cycle to adjust the DATE and time of day. You should have the DAY or Month and correct date and your watch will change the DAY, DATE at the proper time also.

mcdevito75 here, The month you mean the date (number of the day in the month) your Seiko should show the day / date Here"s how.--- To change the day (Monday, Tues. etc) simply pull out the stem and turn the hands around until you reach the day, now push the stem in all the way, and gently slip your fingernail under the stem and gently lift the stem to it"s first notch or position, Seiko watches have a 2 position stem to make changeing the date, (number) easy so you don"t have to keep turning the hands around and around, with the stem out to it"s first notch or position simply turn the stem either toward you or away to change the date, (number) when done push the stem back in and your done.

mcdevfito75 here"s how to change the day and date on your vintage Seiko watch, Pull the stem out to the set position and simply turn the stem (winder) every second time around to the 1--2 3 O"oClock position the day will chage, once you get the day push in the stem in all the way, NOW with your fingernail just under the stem (winder) gently lift the stem up to it"s first notch or position, with the stem at this first notch or position, you can turn the stem and the hands won"t move but the date(number) will change, simply go to the correct number / date and your done, push the stem back in a your ready to go.

Hi, the upper of the two watch stems is turned counter clockwise (looking at the stem) until the desired function (i.e., format, date, time, chrono, timer) appears. To set that function, pull the upper stem out and turn CW to advance & CCW to go back. Once hours & minutes are set, the stem can be pushed in upon a mark to start at zero seconds. For the day of the week, turn the upper stem CCW until date appears. Pull out the stem, to detents or positions, and this will allow the day to be adjusted.

Take care

Most watches have a stem that you pull out to set the time. The little knob on the end of the stem is called a crown. For a day/date watch, there are two clicks. The first click when you pull out the stem is the day / date setting, the second click sets the time.

When you are on the first click, twisting the crown one direction changes the day of the week; twisting the other direction changes the date. If yours has only the date, it could be either direction depending on the manufacturer.

Try turning the stem the opposite direction. The last watch I had with that feature required a clockwise turn to advance the time or date and a counter clockwise turn to change the day of the week.

Try pulling the stem out. Turn the stem in the counter clock wise direction and see if that changes the date/day