LEM Meat Grinder Owner's Guide: Features, Maintenance & Common Issues

A note on this guide: This is our own independent, plain-English owner's guide for LEM meat grinders — not the official manufacturer manual. Controls, exact specifications, and safety protocols vary by model and year. Your official LEM manual is the authoritative source for your specific unit's setup, warranty, and safety requirements. If you need your manual, use the lookup form on this page.

How LEM Meat Grinders Work

A LEM meat grinder is a mechanical or electric appliance designed to break down whole meat into uniform, consistent ground texture. The core principle is straightforward: raw meat enters a hopper at the top, moves through an auger (a rotating screw), gets forced through a perforated die plate, and emerges as ground meat from the discharge opening.

Most LEM grinders use either manual hand-crank operation or electric motor drive. The auger's speed and the die plate's hole size determine the final texture — larger holes yield coarser grinds; smaller holes produce finer results. This flexibility is one reason home cooks and small processors prefer LEM grinders; you can adjust the grind texture for burgers, sausage, or pâté without swapping equipment.

The meat path itself is straightforward: hopper → auger → die plate → discharge tube. Because ground meat generates friction and can warm slightly during processing, keeping components clean and properly assembled prevents both food safety issues and mechanical wear.

Common Features & Controls Across LEM Models

While exact layouts vary by model year and whether you own a manual or electric unit, most LEM grinders share a recognizable set of components and controls.

Motor & Power

Electric models typically have an on/off switch or button on the body. Some include variable speed settings; others run at a fixed RPM. Manual models rely entirely on hand-crank effort. Check your official manual for the correct operating speed (electric units may specify RPM ranges to avoid overheating the motor or damaging meat texture).

The Hopper

This funnel-shaped chamber sits at the top and holds meat before it enters the auger. Hoppers are usually removable for cleaning and typically have a push-rod or tamper to feed meat downward without forcing fingers into the opening. Never use your fingers to push meat through the hopper — always use the tamper or pusher that came with your unit.

Die Plates & Grinding Plates

LEM grinders typically come with multiple die plates in different hole sizes (often #12, #8, and #4, referring to holes per inch). A coarser die (#4) produces texture suitable for braising meat; medium (#8) works for most burgers and sausage; fine (#12) is for pâtés or emulsified sausages. Your official manual will specify which dies come standard with your model and how to identify them.

Auger & Housing

The auger is the rotating spiral shaft that moves meat through the grinder body. It sits inside a cylindrical housing. The fit between auger and housing is critical: too loose and meat doesn't grind evenly; too tight and the motor (or your hand-crank effort) works harder than necessary. This is not a user-adjustable component — if grinding feels unusually difficult or inconsistent, consult your manual's troubleshooting section or contact the manufacturer.

Discharge Tube & Collar

Ground meat exits through a tube at the front of the unit. A ring collar or screw clamps the die plate and grinding plate against the auger shaft. Tightening this collar properly is essential to prevent leakage; your manual will specify how snug it should be (usually hand-tight, not wrench-tight).

Setup & Assembly Before First Use

Most new LEM grinders arrive partially disassembled. Before grinding any meat, familiarize yourself with the assembly sequence in your official manual.

General steps (always verify against your manual):

1. Inspect all parts for shipping damage.
2. Hand-wash all removable components (hopper, auger, die plate, grinding plate, discharge tube) in warm soapy water; dry thoroughly.
3. Assemble the auger and housing per your manual's diagram — ensure the auger spins freely and does not bind.
4. Insert the die plate (beveled side toward the auger); follow with the grinding plate.
5. Screw or clamp the collar until snug (not over-torqued).
6. Attach the hopper and any chute.
7. For electric models, plug in and run a test cycle without meat to confirm smooth operation.

If any part binds or the auger feels rough, stop and review the manual. Forcing assembly can damage the screw threads or misalign internal parts.

Routine Maintenance & Care

Proper upkeep keeps your LEM grinder hygienic, efficient, and long-lasting.

Cleaning After Each Use

Ground meat contains fats, proteins, and bacteria that can oxidize and adhere to metal surfaces. Clean your grinder thoroughly within an hour of use:

1. Disassemble completely (hopper, auger, die plate, grinding plate, discharge tube, collar).
2. Hand-wash all parts in hot soapy water using a bottle brush or soft cloth for tight areas; pay special attention to the die plate holes and auger grooves, where meat residue hides.
3. Rinse thoroughly in clean hot water and dry immediately with a clean cloth to prevent rust or discoloration.
4. Reassemble only when dry and store in a cool, dry place.

Do not soak parts in water for extended periods, and do not use dishwashers unless your manual explicitly approves (most LEM manufacturers advise against it).

Lubrication

Electric LEM grinders have sealed bearings that typically require no user maintenance. Manual models may have a pivot point where the crank handle attaches; a small drop of food-grade oil on this joint annually keeps it smooth. Never oil the meat-contact surfaces — this contaminates food.

Periodic Inspection

Every few months of regular use, visually check:

• Die plate holes for blockages or cracks.
• Auger shaft for visible corrosion or pitting (minor surface patina is normal; deep pitting is not).
• Grinding plate for nicks or warping.
• Housing threads where the collar screws on for stripped edges.

If you notice significant wear, your official manual or the manufacturer can advise whether replacement parts are available.

Common Issues & Troubleshooting

Grinder Won't Turn On (Electric Models)

Likely causes:

• Outlet is off or dead (test with another appliance).
• Power cord is damaged or loose.
• Motor overload protection has tripped (usually after extended use; let cool for 10–15 minutes, then retry).
• Internal electrical fault.

What to do: Check the outlet first. If power is present, consult your official manual for any reset button location. If the grinder still won't start, the unit may need professional service.

Grinding Feels Slow or Unusually Hard

Likely causes:

• Meat is too cold (freezing point makes grinding harder; some cooks chill meat to ~32–40°F, not frozen).
• Die plate is clogged with fat or meat residue.
• Collar is over-tightened, binding the die plate.
• Motor speed is reduced (on variable-speed electric models, check the setting).
• Auger or die plate is bent or damaged.

What to do: Stop immediately. Disassemble and clean the die plate and auger thoroughly. Check the collar tightness per your manual — it should be snug but not locked. If the unit still binds after reassembly and cleaning, inspect the auger and die plate for visible damage. If you spot warping or cracks, parts replacement may be necessary.

Ground Meat Texture Is Inconsistent or Chunky

Likely causes:

• Die plate holes are partially clogged with fat or collagen.
• Meat is too warm, causing fat to smear instead of cut cleanly.
• Wrong die plate for the desired grind (e.g., using a coarse plate for fine sausage).
• Auger is dull or worn (rare, but possible after years of use).

What to do: Clean the die plate thoroughly and confirm you're using the correct die for your application. Ensure meat is at the right temperature (ideally chilled, not frozen). If texture remains poor after these steps, the auger or die may be worn; contact the manufacturer for replacement parts or service guidance.

Leakage Around the Collar

Likely causes:

• Collar is loose.
• Die plate or grinding plate is misaligned or damaged.
• Auger or housing threads are stripped.

What to do: Stop and disassemble. Check that the die and grinding plate are flat and properly seated. Screw the collar back on, following your manual's tightness guidance. If leakage persists after reassembly, the housing or die plate may be damaged; this typically requires manufacturer service.

Meat Is Backing Up in the Hopper

Likely causes:

• Auger isn't turning (motor off, crank handle not engaged, or jamming).
• Meat chunk is too large for the hopper opening or die.
• Cold or fatty meat is not feeding smoothly.

What to do: Stop immediately. Use the pusher tool (never your fingers) to carefully remove any meat above the auger. Check that the auger spins freely by hand (electric grinders should be unplugged). Cut meat into smaller chunks. If the auger is jammed, disassemble and inspect for foreign objects or bent blades.

When to Consult Your Official Manual or a Professional

Your official LEM manual is the final authority on:

• Exact assembly sequences and part diagrams for your specific model.
• Motor specifications, voltage, and power-draw limits (important if you plan to use the grinder on certain circuits or generators).
• Warranty coverage and what voids it (mishandling, modification, or use outside recommended parameters).
• Safety warnings and restrictions (e.g., what materials should never be ground, weight limits on manual models, or crank speed limits).
• Reset codes or electrical diagnostics if your electric model displays an error.

Contact a professional or the manufacturer if:

• The auger binds after assembly and cleaning.
• The motor hums but the auger doesn't turn (sign of jamming or internal slippage).
• You notice corrosion or rust that won't clean off the meat-contact surfaces.
• The housing or collar shows cracks.
• Electrical components are damaged or wet (unplug immediately; do not attempt repair yourself).

Summary

LEM meat grinders are durable, versatile tools that deliver consistent results when properly assembled, used, and maintained. The key to longevity is thorough post-use cleaning, proper assembly per your official manual, and prompt attention to any grinding changes or mechanical resistance.

This guide covers how these grinders generally work and what to watch for, but your official LEM manual is always your go-to reference for your exact model's controls, specifications, and safety protocols. Keep it accessible, and don't hesitate to reach out to the manufacturer if troubleshooting doesn't resolve an issue.