How to Clean and Maintain the Feiying (PF600N) Coffee Grinder

If you’ve ever pulled a shot or brewed a pour-over only to wonder why your coffee tastes off—even though you’re using fresh beans—it might not be the roast. More often than not, it’s a dirty or misaligned grinder. Home grinders like the Feiying (also known as the PF600N or ‘Little Flying Eagle’) are workhorses for pour-over and espresso alike, but without regular cleaning, old coffee oils and grounds build up, affecting both taste and function.

To keep your grinder in top shape, clean the burrs and exterior every 2–3 days, and fully disassemble it for a deep clean weekly. The ideal pour-over grind setting on the PF600N is around 3.5, while espresso typically requires a finer adjustment. Here’s exactly how to maintain it—step by step.

What Is the PF600N (Feiying) Grinder?

The PF600N, commonly referred to as the Feiying in China, is a compact, high-performance home grinder widely used for both pour-over and espresso preparation. Though originally positioned as a semi-commercial or shop-scale compact unit, it’s popular among home users for its durable burrs and adjustable grind settings. The grinder features a straightforward design with a hopper, adjustment knob, burr set, and a ground coffee container—all of which require regular attention to maintain optimal performance.

Key Grinder Parts and Their Functions

Understanding the main components helps with both daily use and cleaning:

• Hopper: Funnel-shaped bean container with a lid; holds whole beans before grinding.
• Grind Adjustment Knob: Numbered 1 to 8; turning adjusts grind size, with higher numbers producing coarser grinds. For pour-over, a setting around 3.5 is typical.
• Burr Set: Consists of two burrs—the front burr is attached to the auger (feeder) and can be removed for cleaning, while the rear burr is fixed. The front burr assembly includes a spring and a 4mm square key on its shaft.
• Adjustment Mechanism: Hidden beneath the adjustment knob; includes a screw and a notched disc that sets the grind fineness.
• Ground Coffee Chamber: Opaque container with a lid and a single hole for dispensing grounds.

Everyday Use and Basic Cleaning

Using the grinder is simple:

1. Ensure it’s plugged in (110V).
2. Add the desired amount of beans to the hopper.
3. Set your grind size using the adjustment knob (e.g., 3.5 for pour-over).
4. Turn the grinder on, then pour beans in while collecting the ground coffee until the grinding sound stops.
5. Turn off the grinder and empty the ground coffee container.

For daily upkeep, brush off external coffee dust after each use. Every 2–3 days, do a more thorough internal clean to prevent oil and particle buildup that can degrade flavor and impair function.

How to Deep Clean the PF600N Grinder

Follow these steps every few days for best results:

1. Gather tools: a screwdriver, small brush, and a container to catch loose coffee grounds.
2. Start with a soft brush to clean the outer casing.
3. Loosen the two screws on either side of the grind adjustment knob in a left-right alternating pattern to avoid misalignment.
4. Remove the adjustment knob to access internal parts. Carefully brush each component, including the auger (the spiral feeder attached to the front burr)—see

   

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5. Take note: the rear burr is fixed and does not rotate, but make sure to clean around its shaft where the spring and 4mm square key sit.
6. Once cleaned, reassemble in order: spring, square key, front burr with auger, then the adjustment knob. Ensure the arrow on the knob points upward during reinstallation.
7. Tighten the screws evenly to avoid wobble, and double-check that the grind setting hasn’t shifted.

How to Adjust the Grind Size on the PF600N

Changing grind size is straightforward but requires care:

1. Before adjusting, take note of the current setting on the numbered dial.
2. Remove the adjustment knob and loosen the screw beneath it to access the adjustment disc.
3. To make the grind finer (for espresso), turn the black adjustment disc clockwise (to the right). To make it coarser (for French press or cold brew), turn it counterclockwise (to the left). Each click or increment alters the grind slightly—fine-tune based on your brew method and taste.

For most pour-over methods like V60 or Kalita Wave, a setting around 3.5 works well. For espresso, you’ll likely need to go finer, adjusting in small increments until you reach the desired extraction.

Frequently Asked Questions

How often should I clean my PF600N grinder?

Clean the external surfaces after each use. Perform a full internal cleaning (removing burrs and the auger) every 2–3 days if used daily. A deep clean helps prevent coffee oil buildup, which can affect taste and performance.

What is the best grind setting for pour-over coffee on the PF600N?

A grind setting of around 3.5 (on the 1–8 scale) is ideal for most pour-over methods such as V60 or Kalita Wave. Adjust up or down based on brew time and taste.

Can I clean the burrs without removing them?

You can brush off surface coffee dust from the burrs without full disassembly, but for a proper clean, especially to remove coffee oils, the front burr and auger should be removed as part of a deeper cleaning routine every few days.

How do I make the grind finer or coarser on the PF600N?

Remove the adjustment knob and loosen the central screw. Turn the black adjustment disc clockwise (right) to make the grind finer, or counterclockwise (left) to make it coarser. Adjust in small increments and test your extraction.

Is the Feiying grinder suitable for espresso?

Yes, the PF600N (Feiying) can grind fine enough for espresso, especially when adjusted to a lower number (finer setting). It’s often used as a semi-commercial grinder in cafes and performs well for both espresso and filter brewing when properly maintained.

Recommended FrontStreet Beans for Home Grinders

For use with the PF600N or similar home grinders, try FrontStreet Coffee’s Ethiopia Yirgacheffe for bright citrus and floral notes in pour-over, roasted medium-light for clarity. Their PWN Golden Mandheling offers heavy body and sweet spice, ideal for espresso at a finer grind. Also consider the Brazil Queen Manor for a balanced medium roast, great for both milk drinks and filter. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.