How Does a Reel Mower Work — Types and Benefits Explained

Understanding how does a reel mower work starts with one key principle — a set of helical blades spinning against a fixed cutting bar to produce a clean scissor cut. The entire cutting action takes place mechanically, with no engine required on push models. A reel mower weighing 15 to 30 pounds, a flat lawn, and grass at the right height are the only requirements. Setup takes under 2 minutes. This guide breaks down the cutting mechanism, proper mowing technique, maintenance intervals, and the grass types that benefit most from reel mowing.

What Do You Need Before Mowing With a Reel Mower?

Mowing with a reel mower requires 3 prerequisites: a properly adjusted reel mower, grass at a mowable height, and a debris-free lawn surface. Each factor directly affects cut quality and blade longevity.

What Parts Make Up a Reel Mower?

A reel mower consists of 5 to 7 helical blades mounted on a cylindrical reel, a stationary bedknife, two drive wheels, a handle, and a height adjustment mechanism. The helical blades rotate vertically as the wheels turn, passing across the bedknife edge to shear grass blades cleanly.

• Helical reel — 5 to 7 curved blades spinning at 2,000 to 2,500 RPM on powered models
• Bedknife — a fixed horizontal bar positioned at the base of the reel
• Height adjuster — sets cutting height from 0.5 inches to 3 inches depending on model
• Drive wheels — transfer forward motion into reel rotation on push models

How Does a Reel Mower Differ From a Rotary Mower?

A reel mower cuts grass with a scissor action, while a rotary mower tears grass with a single horizontal blade spinning at high speed. Rotary blades strike grass tips and rip them, leaving ragged edges. Reel mowers press each grass blade between the spinning helix and the bedknife, producing a cut comparable to sharp scissors.

The noise difference is significant. Push reel mowers operate at roughly 55 decibels — quieter than a normal conversation. Gas rotary mowers produce 90 decibels or more, requiring hearing protection.

What Conditions or Preparations Are Needed?

The lawn surface must be free of sticks, stones, and debris larger than 0.5 inches before mowing. Reel blades contact the bedknife at tight tolerances. A single rock can nick both the reel blade and the bedknife, requiring immediate resharpening. Grass height at the time of mowing must not exceed twice the desired finished height.

Shop Reel Mowers for This Job

These 10 picks from our reel mowers range cover the equipment this job calls for. Check each product's specs against your machine and job before ordering. Browse all reel mowers.

McLane Reel Mower for Commercial Lawn Equipment | 20 In. | 7 Blade | GX120 Engine | McLane$2,240McLane Reel Mower for Lawn and Turf | 20 Inch Cut | 7 Blade | 5.5 HP B&S Engine | McLane$1,770Reel Mower for Commercial Mowing | 25 Inch | 10 Blade | Honda GX160 Engine | McLane$3,315Reel Mower for Lawn Care | 20" | 10 Blade | Honda GX160 Engine | Greens Keeper | McLane$2,950Reel Mower for Lawn Care | 25" | Grooved Roller | 7 Blade | 9.5 GT B&S Engine | McLane$2,290Reel Mower for Lawn Care | 25 In | Grooved Roller | 7 Blade | Honda GX160 | McLane$2,770Reel Mower for Turf Maintenance | 20" | 10 Blade System | 5.5 HP B&S Engine | McLane$2,51520" Reel Mower for Lawn Care | Grooved Roller | 7 Blade | 5.5 HP B&S Engine | McLane$2,01025 In. Reel Mower | 7 Blade | Front Wheels | GX160 Engine | McLane$2,60025" Reel Mower with Front Wheels | 7 Blade | 9.5 HP Briggs & Stratton Engine | McLane$2,075

How Does the Cutting Mechanism of a Reel Mower Work Step by Step?

The reel mower cutting mechanism follows 5 sequential actions from forward motion to completed cut. Each action occurs continuously as the mower moves across the lawn.

What Are the Steps to Cut Grass With a Reel Mower?

The cutting cycle repeats thousands of times per minute across 5 distinct mechanical stages.

1. Push forward. Apply steady forward pressure on the handle. The drive wheels engage the gear mechanism and transfer rotational energy to the cylindrical reel.
2. Engage the reel. Allow the helical blades to spin toward the bedknife as the wheels rotate. Consistent walking speed of 2 to 3 miles per hour produces the cleanest cut.
3. Trap the grass. Let each grass blade feed between the rotating helix and the stationary bedknife. The curved blade geometry guides grass into the cutting zone rather than pushing grass forward.
4. Shear the blade. Maintain forward motion as the helical blade edge meets the bedknife edge. The two surfaces bypass each other with a gap of 0.001 to 0.003 inches, shearing the grass cleanly.
5. Discharge the clipping. Continue forward as the cut grass falls behind or in front of the reel depending on the reel's rotational direction. Most models discharge clippings forward onto the uncut lawn ahead.

Why Does Reel Mowing Produce a Cleaner Cut Than Tearing?

The scissor cut seals grass blade tips, reducing moisture loss by up to 50 percent compared to rotary-torn tips. Torn grass tips turn brown within 24 to 48 hours as cells die and moisture escapes. Scissor-cut tips heal faster and remain green, which is why reel-mowed lawns appear healthier.

Disease resistance improves with clean cuts. Ragged tear wounds create entry points for fungal pathogens. A sealed scissor cut reduces these openings significantly, lowering the risk of brown patch and dollar spot.

What Are the Most Common Mistakes?

The most common mistake is mowing grass that exceeds twice the target cutting height. Overgrown grass wraps around the reel, stalls rotation, and produces uneven results. Follow the 1/3 rule to prevent this problem.

• Mowing too fast — reduces blade-to-grass contact time, leaving uncut strips
• Skipping blade adjustment — a gap exceeding 0.003 inches folds grass instead of cutting grass
• Mowing wet grass — moisture causes clippings to clump on the reel and bedknife, reducing cut quality

What Safety Practices Apply When Using a Reel Mower?

Reel mower safety requires 3 controls: proper footwear, blade awareness during adjustment, and debris removal before mowing. Each control prevents a specific laceration or impact injury.

What Are the Critical Safety Requirements?

Closed-toe shoes with rigid soles are the primary safety requirement. Reel blades sit exposed at ground level, unlike rotary mowers with protective decks. Bare feet or sandals create direct laceration risk. Inspect the lawn for rocks and branches before every mowing session to prevent projectile injuries.

• Wear closed-toe shoes — exposed blades can contact toes at the front of the mower
• Keep hands clear of the reel during height and blade adjustments — the helix has no blade guard
• Remove all debris from the lawn — objects striking the bedknife can chip and launch metal fragments

What Are the Warning Signs During Operation?

A clicking or scraping sound during mowing indicates the reel blades are contacting the bedknife unevenly. Stop mowing immediately when this sound occurs. Uneven contact causes blade nicks and misalignment. A tearing sound — distinct from the clean snipping sound of proper operation — means the blade-to-bedknife gap exceeds tolerance. Check and reset the gap before continuing.

How Do You Maintain a Reel Mower After Use?

Post-use reel mower maintenance involves 4 steps: cleaning, inspection, blade adjustment, and dry storage. Skipping any step shortens blade life and degrades cut quality within 2 to 3 mowing sessions.

What Post-Use Maintenance Is Required?

Remove all grass clippings from the reel blades, bedknife, and wheel gears after every use. Use a stiff brush or compressed air to clear packed debris. Apply a light coat of machine oil to the reel blades after cleaning to prevent rust. Wipe down the bedknife edge with an oiled cloth. Store the mower in a dry location off bare concrete to avoid moisture transfer.

How Often Do You Sharpen and Adjust Reel Mower Blades?

Check the blade-to-bedknife gap every 20 to 30 hours of use. This gap is the single most important maintenance point on a reel mower. Use a strip of newspaper to test the cut — a properly adjusted reel slices the paper cleanly at any point along the bedknife. Sharpen the reel blades by backlapping with valve-grinding compound once per season for residential use, or every 40 to 60 hours for professional turf applications.

If you are ready to experience the scissor-cut difference, browse our full collection of Reel Mowers to find the right model for your lawn size and grass type.

Frequently Asked Questions About Reel Mowers

The most common reel mower questions cover cutting capability, mowing rules, lawn preparation, and grass type compatibility. The answers below resolve each with specific numbers and direct guidance.

Why Use a Reel Lawn Mower?

A reel lawn mower produces a scissor-quality cut that seals grass blade tips, promotes faster healing, and reduces disease entry points — all with zero fuel, zero emissions, and noise levels around 55 decibels.

Golf courses worldwide use reel mowers exclusively because cut quality at heights below 1 inch is unmatched by any rotary alternative. Professional groundskeepers rely on reel mowing for putting greens, tee boxes, and fairways. For residential use, reel mowers weigh 15 to 30 pounds, store in minimal space, and eliminate gas, oil, and spark plug maintenance entirely.

What Is the 1/3 Rule of Mowing?

The 1/3 rule states: never remove more than one-third of the grass blade height in a single mowing session.

Removing more than one-third shocks the grass plant, redirecting energy from root growth to blade recovery. A lawn maintained at 2 inches requires mowing before the grass reaches 3 inches. Reel mowers make the 1/3 rule easier to follow because the lightweight design and quiet operation encourage more frequent mowing — every 3 to 5 days during peak growing season instead of weekly.

Can a Reel Mower Handle Tall or Thick Grass?

A standard push reel mower handles grass up to 4 inches tall effectively; grass exceeding that height wraps around the reel and stalls the blades.

Thick, coarse grasses like St. Augustine and tall fescue at mature heights challenge most reel mowers. Reel mowing performs best on fine-textured, low-growing species — Bermuda grass, Zoysia, and Kentucky Bluegrass — maintained at 0.5 to 2.5 inches. Lawns under 8,000 square feet with these grass types are the ideal match for a reel mower.

Do You Have to Pick Up Dog Waste Before Mowing?

Remove all animal waste from the lawn before reel mowing — reel blades sit at ground level with no protective deck, and waste contaminates the reel, bedknife, and wheel gears directly.

Unlike rotary mowers that enclose the blade under a steel deck, reel mowers expose the entire cutting mechanism. Waste material packed into the blade-to-bedknife gap degrades cut quality and accelerates corrosion. Walk the entire lawn and remove waste before every mowing session. This step takes 3 to 5 minutes and protects the mower from unnecessary cleaning and maintenance.

How Do Reel Mowers Compare to Gas or Electric Powered Mowers?

Push reel mowers require zero fuel, produce zero emissions, and cost 60 to 80 percent less to maintain annually than gas-powered rotary mowers.

Gas mowers require oil changes, air filter replacement, spark plug replacement, and fuel stabilizer — none of which apply to a push reel mower. Electric mowers eliminate fuel costs but still produce 70 to 80 decibels and require battery replacement every 3 to 5 years. For lawns under 8,000 square feet with appropriate grass types, a reel mower delivers superior cut quality at a fraction of the operating cost.