Sun Joe Manual Push Reel Lawn Mower vs Sun Joe MJ504M Manual Reel Mower: Spec Comparison
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Choosing between the sun joe manual push reel lawn mower vs mj504m manual reel mower depends on your yard size and cleanup habits. Both are eco-friendly, gas-free options with five steel blades and adjustable cutting heights. The main difference lies in their cutting width and included accessories. One model offers a wider 20-inch path and a grass catcher, while the other is lighter with a narrower 16-inch cut. This spec comparison helps you decide which fits your routine.
Key differences
| Aspect | Sun Joe 20-Inch Push Reel Mower with Grass Catcher | Sun Joe MJ504M 16-Inch Manual Reel Mower |
|---|---|---|
| Cutting Width | 20 in | 16 in |
| Weight | 30 pounds | 24.9 pounds |
| Grass Catcher | Included (8.5-gallon) | Not listed |
| Cutting Height Range | Up to 2.44 in (9 positions) | 1.1 in to 2.9 in |
| Wheel Type | Dual-wheel | 4 all-terrain wheels |
Which one should you choose?
Choose Sun Joe 20-Inch Push Reel Mower with Grass Catcher if
- You want a wider 20-inch cutting path to cover more ground per pass.
- You prefer to collect clippings with the included 8.5-gallon grass catcher.
- You need a taller maximum cutting height of 2.44 inches for uneven terrain.
Choose Sun Joe MJ504M 16-Inch Manual Reel Mower if
- You prioritize a lighter mower under 25 pounds for easier maneuvering.
- You have a smaller lawn where a 16-inch cut is sufficient.
- You want stability from four all-terrain wheels rather than a dual-wheel design.
Verdict: Choose the 20-inch model if you need a wider cut and want to collect clippings. Pick the 16-inch MJ504M if you value a lighter weight and four-wheel stability for smaller spaces. Both offer clean, gas-free mowing with durable steel blades.
Side by Side Spec Comparison
Cutting Width
The Sun Joe 20-Inch Push Reel Mower features a 20-inch cutting path, while the Sun Joe MJ504M offers a 16-inch width. A wider deck covers more ground per pass, reducing the time needed to mow larger areas. You will complete your task faster with the 20-inch model. The 16-inch MJ504M requires more overlapping passes to achieve the same coverage. If your lawn is small, the narrower width may feel more manageable. For medium-sized yards, the extra width provides a clear efficiency advantage.
Weight
Portability matters when pushing a manual mower. The Sun Joe MJ504M weighs 24.9 pounds, making it lighter and easier to lift or carry. The 20-inch model tips the scale at 30 pounds. That five-pound difference can be noticeable when navigating stairs or tight storage spaces. You will find the MJ504M easier to handle if you have physical limitations or need to move the mower frequently. The heavier 20-inch unit may feel more stable during use but requires more effort to transport.
Grass Collection
Cleanup preferences vary among homeowners. The 20-inch mower includes an 8.5-gallon grass catcher, allowing you to collect clippings directly as you mow. This keeps your yard tidy and eliminates raking. The MJ504M does not include a grass catcher in its standard configuration. You will need to let clippings fall back onto the lawn or use a separate bag if available. If you prefer a manicured look without debris, the 20-inch model is the superior choice for integrated collection.
Cutting Height Range
Both mowers allow height adjustments, but the ranges differ. The MJ504M adjusts from 1.1 inches to 2.9 inches, offering a slightly lower minimum cut. The 20-inch model adjusts up to 2.44 inches across nine positions. If you prefer a lower cut for a golf-course look, the MJ504M provides that option. The 20-inch model caps out lower, which may not suit taller grass types. Choose based on your desired lawn height and grass type.
Overall Dimensions
Storage space is often limited in garages or sheds. The 20-inch mower is 26.6 inches wide, 50.4 inches high, and 48 inches long. The MJ504M is narrower at 22.4 inches wide but taller at 29.5 inches high and longer at 51.6 inches. The narrower width of the MJ504M makes it easier to fit between narrow shelves or racks. The 20-inch model is more compact in length, which may suit different storage layouts. Measure your space before deciding.
Which mower fits your lawn needs
You want to collect clippings for a tidy yard
This model includes an 8.5-gallon grass catcher. You can collect clippings as you mow to keep your yard neat. The 20-inch cutting width covers more ground per pass. This saves time on larger lawns. The nine-position height adjustment lets you tailor your look. It is a practical choice for those who prefer bagging over raking.
You prefer a lighter mower for easy maneuvering
Weighing under 25 pounds, this unit is significantly lighter than the 30-pound alternative. Its compact 16-inch width fits tight spaces easily. The rugged all-terrain wheels help you push it smoothly across the grass. It is ideal for small to medium lawns where portability matters. You get precise cuts without the bulk of a bagger.
You need a taller cut for rougher grass
This mower adjusts up to 2.9 inches, which is higher than the 2.44-inch maximum of the other model. This extra height helps handle thicker or uneven grass better. The five steel blades provide a clean cut at various settings. It is a solid option if you prefer a slightly longer lawn appearance or have tougher turf conditions to manage.
The products compared
Sun Joe 20-Inch Push Reel Mower with Grass Catcher
Best for: small lawns needing bagging and height control
- Power Source
- Manual reel
- Cutting Width
- 20 in
- Drive Type
- Push
- Cutting Height
- 9 positions, up to 2.44 in
- Mowing Function
- Bag (grass catcher included)
- Application
- Lawn
View on Amazon: Sun Joe 20-Inch Push Reel Mower with Grass Catcher Affiliate link
This Sun Joe MJ502M is a 20-inch manual push reel mower. It features five hardened steel blades and a 9-position height adjustment up to 2.44 inches. The unit weighs 30 pounds and includes an 8.5-gallon grass catcher. Its 26.6-inch width and dual-wheel design aid maneuverability. You get a clean cut without gas or electricity. It suits small, flat lawns where you prefer eco-friendly maintenance.
Pros
- 20-inch cutting width for efficient coverage
- Includes an 8.5-gallon grass catcher
- 9-position height adjustment up to 2.44 inches
- Lightweight 30-pound build for easy pushing
- Five durable steel blades for precise cutting
Cons
- Requires manual pushing with no engine assist
- Heavier than the 16-inch competitor at 30 pounds
- Limited to 2.44-inch maximum cutting height
Good fit if
- You have a small, flat lawn under 5,000 square feet
- You want to avoid gas fumes and noise
- You need a grass catcher to keep clippings off the lawn
Skip if
- You have a large property requiring less effort
- You need to mow thick or wet grass
- You prefer electric or gas power sources
Verdict: Sun Joe MJ502M 20-Inch Push Reel Mower is a solid choice for small yards where you value a bagging system and precise height control without the weight of a motorized unit.
Sun Joe MJ504M 16-Inch Manual Reel Mower
Best for: small lawns and eco-conscious users
- Power Source
- manual reel
- Cutting Width
- 16 in
- Cutting Height
- 1.1 in to 2.9 in
- Mowing Function
- Bagging
- Dimensions
- 51.6 × 22.4 × 29.5 inches
- Weight
- 24.9 pounds
View on Amazon: Sun Joe MJ504M 16-Inch Manual Reel Mower Affiliate link
The Sun Joe MJ504M is a 16-inch manual reel mower designed for small to medium lawns. It features five steel blades and an adjustable cutting height from 1.1 to 2.9 inches. Weighing under 25 pounds, it is lightweight and easy to maneuver. This model includes a grass catcher for debris collection. It is a practical option for those seeking a zero-emission mowing solution.
Pros
- 16-inch cutting width for efficient mowing
- Five durable steel blades for precise cuts
- Adjustable height settings from 1.1 to 2.9 inches
- Includes a grass catcher for clean-up
- Lightweight design under 25 pounds
Cons
- Requires manual pushing with no motor assistance
- 16-inch cutting width is narrower than electric models
- Manual operation may be strenuous on thick grass
Good fit if
- You want a zero-emission mowing option
- You have a small to medium lawn
- You prefer lightweight equipment for easy storage
Skip if
- You need to mow large or hilly lawns
- You prefer electric or gas-powered convenience
- You want a wider cutting deck for speed
Verdict: Sun Joe 16" Manual Reel Mower is a solid choice for small lawns where you value eco-friendly operation and easy maneuverability over raw power.
Specifications side by side
| Spec | Sun Joe 20-Inch Push Reel Mower with Grass Catcher | Sun Joe MJ504M 16-Inch Manual Reel Mower |
|---|---|---|
| Power Source | Manual reel | manual reel |
| Cutting Width | 20 in | 16 in |
| Drive Type | Push | not stated |
| Cutting Height | 9 positions, up to 2.44 in | 1.1 in to 2.9 in |
| Mowing Function | Bag (grass catcher included) | not stated |
| Application | Lawn | not stated |
| Dimensions | 48 × 26.6 × 50.4 inches | 51.6 × 22.4 × 29.5 inches |
| Weight | 30 pounds | 24.9 pounds |
| Size | 20 in | 16-Inch Manual |
| Color | Green | Green |
| Model | MJ502M | MJ504M |
Frequently asked questions
Is the Sun Joe MJ504M heavy to push?
The Sun Joe MJ504M weighs 24.9 pounds. This makes it lighter and easier to maneuver than the 20-inch model, which weighs 30 pounds. Its compact size also helps you navigate tight spaces with less effort.
Does the 20-inch mower have a grass bag?
Yes, the Sun Joe 20-Inch Push Reel Mower includes a grass catcher. It is designed for bagging clippings, which helps keep your lawn tidy. The MJ504M also supports bagging, but the larger model is noted for precise height control alongside collection.
Which mower is better for small lawns?
Both models are suitable for small lawns. The 16-inch MJ504M is ideal for eco-conscious users who value easy maneuverability. The 20-inch version is better if you need a wider cut and a dedicated bagging system for neater results.
How wide is the cutting path on the MJ504M?
The Sun Joe MJ504M has a 16-inch cutting width. This narrower path is sufficient for smaller yards. It allows for precise turns and easier handling in confined areas compared to the wider 20-inch deck of the other model.
What is the difference in height between the two mowers?
The 20-inch mower stands 50.4 inches tall, while the MJ504M is 29.5 inches tall. The taller model may offer better ergonomics for some users, whereas the shorter MJ504M is more compact for storage and transport.
Are both mowers manual or motorized?
Both the Sun Joe 20-Inch Push Reel Mower and the MJ504M are manual. They rely on your pushing power to spin the reels. Neither model has a motor, making them quiet, zero-emission, and low-maintenance options for your lawn.
Which mower is more compact for storage?
The MJ504M is more compact. It measures 22.4 inches wide and 29.5 inches high. The 20-inch model is larger, measuring 26.6 inches wide and 50.4 inches high. If storage space is limited, the smaller MJ504M fits more easily.

