What to Do If Your Watch Is Running Fast or Slow
Why mechanical watches lose accuracy, how timing adjustments work, and when you need a full service.
By Harry · · 4 min read
When your watch starts running fast or slow, it's easy to assume something is broken and needs expensive repair. The truth is simpler. Most timing issues come from normal wear, magnetism, or just needing a cleaning inside. I've worked on thousands of watches in New York, and the ones that come in consistently off by a few minutes usually need the same basic care your car needs. A lot of people panic and stop wearing a watch that's actually fixable in an afternoon.
How to Tell If Your Watch Is Actually Running Wrong
The first step is knowing what "wrong" actually means. A mechanical watch that gains or loses 10 to 15 seconds a day is normal. That's within the spec for most watches made in the last 50 years. If your watch is off by a minute or more per day, or if it started keeping perfect time and suddenly changed, then something has shifted.
Write down how much time your watch gains or loses over a full day. Don't check it every hour. Leave it alone for 24 hours, then compare it to your phone or a wall clock. This gives you real data to bring in, and it helps me figure out what's going on right away instead of guessing.
Magnetism Is a Real Problem in the City
New York is full of magnets. They're in your phone, your laptop, your headphones, your apartment door locks, even some of your furniture. A mechanical watch can pick up a magnetic charge just by sitting on your nightstand next to your phone. When that happens, the hairspring inside gets magnetized and stops oscillating at the right frequency. Your watch runs fast, sometimes very fast.
You can test this yourself. Hold a compass near your watch. If the needle moves, your watch is magnetized. The fix is simple. A watchmaker has a demagnetizer that looks like a small coil. We run your watch through it, and the magnetism is gone. Takes five minutes. This is one of the most common issues I see, and it costs less than a decent lunch in Manhattan.
Wear and Dirt Inside Slow Things Down
If your watch is running slow, the problem is usually friction. Inside every mechanical movement are tiny wheels, pivots, and springs. They all need to move freely. Over years of wear, dust and old lubricant build up. The movement gets sluggish. Your watch loses time.
This is why a full service matters. When I open a watch, I clean every part by hand. I remove the old oil, which has thickened and turned to sludge. I inspect the pivots for wear. Then I reassemble everything with fresh, proper-weight oil in the right spots. A watch that was losing five minutes a day often comes back to normal after that work.
How often does this need to happen? That depends on how much you wear the watch and where you wear it. A desk watch in a clean office might go ten years. A watch worn every day while you work construction might need service every three to four years. The more you wear it, the more it accumulates dust and needs cleaning.
The Balance Wheel Might Need Adjustment
Some watches lose or gain time because the balance wheel is out of adjustment. The balance wheel is the oscillator that keeps time. It's supposed to swing back and forth at an exact frequency. If it's bent, worn, or just out of adjustment, your watch will be off.
Adjusting a balance wheel is delicate work. It involves moving small weights on the wheel itself or adjusting the hairspring. This is not something to try at home. But a trained watchmaker can usually get your watch back on time. Sometimes it takes a few adjustments. Sometimes the balance wheel itself is too worn and needs replacement. Either way, this is fixable.
When It's Time to Bring It In
If your watch is running more than a minute or two off per day, bring it to a real watchmaker. Not a jewelry store counter. A real watchmaker who has a bench, tools, and experience. In New York, you have options, and Watch Repair & Co is here to help.
Bring your watch and wear it for a few days before you come in so we can see how it's actually performing. Let us know if anything changed or if you dropped it recently. The more information you give us, the faster we can diagnose the problem.
Most timing issues are cheap to fix. Demagnetizing costs almost nothing. A service runs more, but it's an investment that keeps your watch running another decade. Don't let a watch sit broken because you're worried about cost. Call Watch Repair & Co in New York and let's get it running right again.