Change a Seiko Dial & Hands — Mod Tutorial

Changing the dial and hands is the mod that hooks most people. It is the most visible change you can make to a Seiko — a new face, a new character — and it needs no lathe, no exotic tooling, just a few watch tools and a good deal of patience. This is the swap that turns a stock Seiko into your Seiko.

Below is the whole job, photographed stage by stage: opening the caseback, lifting the movement, removing the old dial and hands, fitting the new ones, and closing it all back up. The mechanical steps are easy. The one that takes practice is setting the hands level and evenly spaced — so that is where we slow down.

Difficulty: 4 / 5 — setting the hands is the challenge

Quick Answer: Swapping a Seiko dial and hands is a moderate mod — the mechanical steps are simple, but setting the hour, minute, and second hands level and evenly spaced takes a steady hand and a loupe. You'll need a caseback opener, a hand remover and hand-setting tool, a loupe, tweezers or cleaning putty, and compressed air. The technique applies to most Seiko movements — 7S, 4R, and the NH family.

What You'll Need

None of this is exotic. Serviceable "China-made" tools will complete the job; Swiss-made versions cost far more and are nicer to use, but both get you there. Wear gloves or finger cots so you never touch the movement or parts directly.

Caseback opener — a Jaxa-style wrench opens any Seiko caseback; a combined opener-and-holder is a luxury worth having.
Case holder — grips the case so you're not prying against your fingers (SKX-type casebacks are tight).
Hand remover — a Presto-type lever lifts hands cleanly without marking the dial.
Hand-setting tool — a multi-runner setter presses hands on square and level; the hard step lives or dies here.
Loupe — non-negotiable for judging hand height and spotting dust.
Cleaning putty and tweezers — to hold hands and lift fingerprints; carbon-fibre tweezers scratch less than steel.
Compressed air — clears dust off the dial, hands, and inside the case before closing.
Dial protector — a Bergeon guard or even a food-grade poly film shields the dial (and hands) while you pull the old hands.

Open the Case and Free the Movement

Step 1 — Open the caseback

Seat the opener's bits into the notches on the caseback and turn anti-clockwise to loosen (clockwise tightens on the way back). A holder reduces slippage and the odds of scoring the case.

Seating a Bergeon 5700-Z style bench case opener onto the Seiko caseback notches — Left to right: the bench opener seats into both caseback notches, tightens down, and turns anti-clockwise to open — no slippage, no scratched caseback.

Tightening the case opener bits into the Seiko caseback notches — Left to right: the bench opener seats into both caseback notches, tightens down, and turns anti-clockwise to open — no slippage, no scratched caseback.

Step 2 — Pull the crown and stem

With the movement exposed, release the crown before removing the movement. Press gently on the setting lever with a toothpick and the crown and stem slide out. That lever sits in much the same place across Seiko movements — 7S26, 7S36, NH35, NH36.

Pressing the stem release lever on a Seiko movement with a toothpick — A toothpick on the release lever — gentle pressure, and the crown and stem slide free.

Drawing the crown and stem out of the Seiko movement — A toothpick on the release lever — gentle pressure, and the crown and stem slide free.

Step 3 — Lift the movement out

If the movement sits tight, ease it up with a toothpick or small flat-head, then tip it dial-up onto a cushion. On non-hacking 7S and older 4R movements, the cleanest way to stop the seconds hand is to let the mainspring wind down first.

Removing the movement, dial and hands from a Seiko watch case — Movement, dial and hands come out as one assembly and rest dial-up on a cushion.

Remove the Old Dial and Hands

Step 4 — Remove the hands

Line the hands up pointing the same way, lay a protective film over the dial and hands, and lift all three with a Presto-type remover. The film spreads the load and shields both the dial and the hands.

Removing Seiko watch hands with a Presto hand remover over a protective film — Align the hands, cover them with film, and lift all three at once — the film protects dial and hands together.

Step 5 — Lift off the dial

Slip a small flat-head into the gap between the dial and the plastic movement ring and twist gently; the dial lifts away. A toothpick works too. Take care not to bend the dial feet — they're delicate and you'll want them straight for the next dial.

Twisting a small flat-head under the dial edge to lift it off the movement ring — Left to right: a gentle twist under the dial edge and the dial lifts free — mind the dial feet.

The old dial lifted away from the Seiko movement — Left to right: a gentle twist under the dial edge and the dial lifts free — mind the dial feet.

Fit the New Dial

Orient the movement to its crown position, then find the two holes in the plastic ring around the movement — that's where the new dial's feet drop in.

Fitting a new Seiko dial, aligning the dial feet to the holes in the movement ring — The new dial's feet seat into two holes in the movement ring — their position is set by the crown location.

Match the dial to your crown position. A 3 o'clock and a 4 o'clock movement place the dial-foot holes differently, so a 3 o'clock dial won't seat correctly on a 4 o'clock movement. Many of our dials ship with four feet — you clip the two that don't match your crown. Fitted the wrong feet, or bought the wrong layout? Remove all the feet and mount the dial on double-sided adhesive instead.

Set the New Hands

This is the step that separates a clean mod from a frustrating one. Fit the hour hand first, then the minute, then the second, holding each with putty or tweezers and pressing it home with the setting tool. After the hour and minute are on, refit the stem and advance the time — the hands should land squarely on each marker.

Fitting new Seiko hands with a high-precision multi-runner hand-setting tool — Left to right: the multi-runner setter presses each hand on square — press only as far as needed, so the hands end up level and evenly spaced.

Pressing the next hand home with the multi-runner hand-setting tool — Left to right: the multi-runner setter presses each hand on square — press only as far as needed, so the hands end up level and evenly spaced.

The whole trick is height: the hour, minute, and second hands must sit level and evenly spaced apart, or they'll foul each other and stop the watch. It is tempting to press a hand fully home — don't. Press gently, just enough, and judge the gap with a loupe. Knowing how much force to use, and when to release, is the part that only comes with practice.

Aligning the newly set hands on the Seiko movement — Advance the time and watch the hands land squarely on each marker — misalignment shows up immediately.

If the second hand won't move, or stops after a full turn, work through these in order:

Dust in the gear train. A speck between the centre pinion and the minute wheel can stop or wear a movement. Work in a low-dust space, blow the parts off often, and check for debris.
A bent centre-seconds pinion. Pressing a hand onto the side of the pinion dents it. Keep it straight; a loupe (and holding your breath as you press) helps.
A damaged second-hand pin. The hand's hollow pin must be straight and correctly sized to the pinion — not dented.
Uneven hand height. The most common culprit. Hands pressed to different heights collide; keep all three level and horizontal.
A bent hand. A minute hand tipped slightly upward at the tip will clip the second hand and stall the movement. Straight hands only.

Checking the hour, minute and second hands sit level and evenly spaced — The check that matters most: hour, minute and second hands level and evenly spaced, nothing touching.

Top view of a 7S26 movement with dial and hands removed — Left to right: the bare movement, the hour hand going on, and the dial with hour and minute hands seated — the centre-seconds pinion must stay straight and undented throughout.

Installing the hour hand on the 7S26 movement — Left to right: the bare movement, the hour hand going on, and the dial with hour and minute hands seated — the centre-seconds pinion must stay straight and undented throughout.

Clean Up, Close, and Watch It Done

Blow the dial, hands, and inside of the case clean with compressed air; lift any fingerprints with putty or a little ethanol, and only ever wipe with microfibre to avoid hairlines. Then set the movement dial-up, align the case to it, and press the case home.

Blowing dust off a Seiko dial and case interior with a compressed air canister — Compressed air does in seconds what a cloth does with new lint.

Lowering the Seiko case onto the movement sitting dial-up — Case lowered onto the movement dial-up, then flipped to confirm it sits fully home.

Confirming the movement is fully seated inside the Seiko watch case — Case lowered onto the movement dial-up, then flipped to confirm it sits fully home.

Working the Seiko movement fully home in the case — Left to right: the movement worked fully home — it should sit flush, with no rock, and the crown should slide in cleanly.

The movement seated flush in the case, dial and hands in place — Left to right: the movement worked fully home — it should sit flush, with no rock, and the crown should slide in cleanly.

Refitting the caseback on the Seiko case — Left to right: gasket checked, and the caseback goes back on — screwed down clockwise. That's the swap.

Screwing the Seiko caseback down clockwise to close the watch — Left to right: gasket checked, and the caseback goes back on — screwed down clockwise. That's the swap.

Flip the case, confirm the movement is fully seated and the crown position lines up — if the stem slides in effortlessly, you're aligned — then check the caseback gasket is intact and screw the caseback down clockwise. That's the swap.

Prefer to watch it done first? Here's a full SNK walkthrough courtesy of Eric Y / Lume Shot .

A full dial-and-hands swap on a Seiko SNK, start to finish. Video: Eric Y / Lume Shot.

Modifying a watch generally voids its warranty, and any external links above aren't maintained by Lucius Atelier. Work at your own risk.

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Frequently Asked Questions

How hard is it to change a Seiko dial and hands?

Moderate. The mechanical steps — opening the case, lifting the movement, removing the old dial — are straightforward. The demanding part is setting the new hands: they must sit level and evenly spaced so they don't collide and stall the movement. With a hand-setting tool, a loupe, and patience, a first-timer can manage it, but expect the hands to take a few attempts.

What tools do I need to change a Seiko dial and hands?

A caseback opener (and ideally a case holder), a Presto-type hand remover, a hand-setting tool, a loupe, tweezers or cleaning putty, compressed air, and a dial protector. Serviceable versions are inexpensive; Swiss-made tools cost more but aren't required. Gloves or finger cots keep your fingers off the movement and parts.

Do I need a dial that matches my crown position (3 or 4 o'clock)?

Yes. The dial feet sit in different places for 3 o'clock and 4 o'clock movements, so a 3 o'clock dial won't seat correctly on a 4 o'clock movement. Many Lucius Atelier dials ship with four feet — you clip the two that don't match your crown. If you clip the wrong pair, remove all the feet and mount the dial on double-sided adhesive instead.

Why does my second hand stop after one rotation?

Almost always a hand-height or clearance problem. The most common cause is hands set at uneven heights so they collide; others are a bent centre-seconds pinion, a dented or wrong-sized second-hand pin, dust in the gear train, or a bent hand catching another. Reset the hands level and evenly spaced, and check the pinion is straight under a loupe.

Will a dial and hands swap work on any Seiko?

The technique applies to most Seiko movements — the 7S, 4R, and NH families share the same basic layout, so the steps are the same. What changes is that your dial and hands must fit your specific movement and crown position. Check whether your movement is 3 or 4 o'clock crown, and that your hands are sized for Seiko NH-family pinions.

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How To Modify Your Seiko Watch — Dial and Hands