Full Service ETA 7750 or ETA 7751 Watch Movement Tools and Supplies
Are you considering performing a full service on an ETA 7750 or ETA 7751 watch movement? Do you need to know what tools and supplies to purchase?
Here is a complete list of tools and supplies needed to disassemble, clean, and reassemble a Valjoux ETA 7750 or ETA 7751 watch movement.
Tools and Supplies Required
- Hand/Needle Removing Tool
- 0.80 Screw Driver
- 1.2 Screw Driver
- 1.4 Screw Driver
- 1.5 Screw Driver
- Peg Wood (holding down springs and parts)
- Movement Holder (Bergeon 4040 holder recommended)
- Plastic 7750 Movement Holder (such as the Horotec MSA 09.050-01)
- Brass Tweezers (such as Dumont Brass #4)
- Parts Holder
- Main Spring Winder (see my notes below)
- Oil Applicators (such as Burgeon 30102S)
- Oil Cups
- Finger Cots or Rubber Gloves
- Parts Cleaning Machine (with Cleaner and parts holders)
- Cleaning Brushes
- Lighter Fluid (for cleaning the Incabloc Jewel)
- Hand Fitting Tool (such as Horotec MSA 05.011)
- Moebius D5
- Moebius 9501
- Moebius 9010
- Moebius 9415 (same as 941)
- Molykote DX
- Lubeta v105 (an immersion or dip lubricant)
- Silicone Grease (gasket sealing grease)
Mainspring Winder Recommendations
Do not wind a mainspring by hand. It will be damaged, ever so slightly. Please use a tool. Here is how to get a fantastic swiss made tool and save a lot of money.
I recommend these two tools from Bergeon:
Bergeon Mainspring Winder for ETA and VAL Calibres (about $79.95)
Bergeon 30082-M Mainspring Winder Handle Right Handed (about $52.00)
This combination will work on a lot of movements including the following:
- ETA 2000-1, 2004-1, 2094
- ETA 2660, 2671, 2678, 2688
- ETA 2824-2, 2834-2, 2836-2
- ETA 2892A2, 2893-1-2-3, 2894-2, 2895-2, 2896, 2897
- VAL 7750, 7751, 7753, 7754
- ETA 6497-1, 6498-1
About the ETA 7750 – 7751 Watch Movement
The ETA 7750 and ETA 7751 watch movements are one of my favorite swiss watch movements. The ETA 7751 was the first watch I fully serviced. I completely disassembled, cleaned, and reassembled the ETA 7751 after watching some YouTube videos such as this one. I used the tool and supply list shown above.
ETA 7750 Chronograph
The ETA/Valjoux caliber 7750 is one of the most recognizable and widely used automatic chronograph watch movement. It was based on the manual wind Valjoux caliber 7733, which itself was based on the Venus 188. Today, it is part of the “Mecaline” line of ETA movements. It was officially introduced t0 the watch world around 1973/1974 but after the first run was manufactured, the caliber wasn’t produced again until 1985 (thanks to mechanical timepieces gaining popularity once again). The 7750 was partially designed on a computer – a first for the watch industry.
ETA 7751 Chronograph with Moonphase
The ETA/Valjoux caliber 7751 is a 25 jewels Swiss made self-winding automatic movement. This extremely multi-functional caliber is based on the legendary ETA/Valjoux caliber 7750 chronograph, but with additional complications including a full moon phase indicator at 6:00, a central date hand pointing to the date in the outer perimeter of the dial, day of the week and month windows at 12:00, and a 24 hour hand at 9:00.