1. Introduction and Overview
The Hario Ceramic Coffee Mill "Skerton" is a high-quality hand grinder designed to provide coffee enthusiasts with freshly-ground coffee. Manufactured by HARIO, a Japanese company known for its exceptional glassware since 1921, this mill is built for durability and precision. Its compact design makes it suitable for both home use and travel.
Figure 1: The Hario Ceramic Coffee Mill "Skerton" assembled.
2. Key Features
- Manual Operation: Grinds beans to your desired texture without electricity.
- Ceramic Conical Burrs: Ensures a precise, uniform grind for optimal flavor extraction.
- Nonslip Rubber Base: Keeps the mill stable during grinding, preventing movement.
- Detachable Crank Handle: Ergonomically designed handle detaches for compact storage and easy travel.
- Stepped Grind Adjustment: Easy-to-use mechanism allows for quick changes between grind sizes.
3. Setup and Assembly
The Hario Skerton coffee mill requires minimal assembly before first use. Follow these steps to prepare your grinder:
- Unpack Components: Carefully remove all parts from the packaging. You should have the main grinder body (with burrs), the glass collection jar, the crank handle, and a rubber lid for the jar.
- Attach Glass Jar: Screw the main grinder body onto the top of the glass collection jar. Ensure it is securely fastened.
- Insert Crank Handle: Place the crank handle onto the shaft at the top of the grinder body. Secure it with the provided nut.
- Adjust Grind Size: Before adding beans, adjust the grind size. To do this, remove the crank handle and the securing nut. The grind adjustment mechanism is located beneath the top burr. Turn the adjustment nut clockwise for a finer grind and counter-clockwise for a coarser grind. Re-secure the nut and handle after adjustment.
Figure 2: Components of the Hario Skerton Coffee Mill, showing the main body, glass jar, and handle.
4. Operating Instructions
Follow these steps for optimal grinding performance:
- Add Coffee Beans: Open the top cover of the grinder and pour your desired amount of whole coffee beans into the hopper. Do not overfill.
- Secure Lid: Replace the top cover. If using the rubber lid, ensure it is properly seated around the crank handle shaft.
- Grind Coffee: Hold the grinder firmly with one hand, preferably by the glass jar or the rubber base. With the other hand, turn the crank handle clockwise. The ceramic burrs will grind the beans, and the ground coffee will collect in the glass jar below.
- Check Grind: Continue grinding until all beans have passed through the burrs. Unscrew the glass jar to access your freshly ground coffee.
Figure 3: Adding whole coffee beans to the grinder's hopper.
Figure 4: Manual grinding in progress, showing the crank handle in use.
Figure 5: The glass collection jar containing freshly ground coffee.
5. Maintenance and Cleaning
Regular cleaning and proper care will ensure the longevity and optimal performance of your Hario Skerton coffee mill.
- Disassembly for Cleaning: To clean thoroughly, disassemble the grinder by unscrewing the glass jar, removing the crank handle, and then carefully detaching the top burr assembly.
- Washing: All parts of the grinder, including the ceramic burrs, can be washed under warm running water. Use a mild dish soap if necessary.
- Drying: Ensure all components are completely dry before reassembling to prevent rust on metal parts (though ceramic burrs are rust-resistant) and to maintain hygiene.
- Avoid Counter-Clockwise Grinding: Do not turn the burr counter-clockwise during grinding, as this can damage the grinding mechanism.
- Storage: Store the grinder in a dry place when not in use. The detachable handle allows for more compact storage.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Grinder stops or jams during operation. | A coffee bean may be stuck in the burrs. | Gently reverse the crank handle a small amount, then resume grinding. If persistent, disassemble and clear any obstructions. |
| Grind size is inconsistent (especially coarse). | Grind adjustment nut may be loose or not set correctly for coarser grinds. | Ensure the grind adjustment nut is securely tightened to your desired setting. For very coarse grinds, some inconsistency is normal with manual burr grinders. |
| Handle feels loose or wobbly. | The securing nut for the crank handle may be loose. | Tighten the nut that secures the crank handle to the shaft. Check periodically during use. |
| Coffee grounds flying out of the hopper. | Hopper not fully covered or overfilled. | Ensure the rubber lid is properly installed. Avoid overfilling the hopper. |
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | HARIO |
| Model Number | MSCS-2TB |
| Material | Ceramic (burrs), Glass (jar) |
| Color | Coffee (Black/Clear) |
| Item Weight | 1.25 pounds (approx. 0.57 kg) |
| Product Dimensions | 13"L x 11"W x 16"H (Note: These dimensions seem unusually large for a hand grinder, likely packaging or shipping dimensions. Actual product dimensions are smaller.) |
| Recommended Use | Grinding coffee beans |
| Manufacturer | Hario |
| Date First Available | February 23, 2010 |
8. Warranty and Support
For specific warranty information and support, please refer to the official Hario website or contact their customer service. A digital version of the user manual may also be available for download from the manufacturer's support page.
You can also refer to the official User Manual (PDF) available at: Hario Skerton User Manual PDF