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Introduction
Nothing transforms a overgrown yard into a pristine lawn quite like a reliable self-propelled gas lawn mower. If you’re tired of pushing heavy mowers uphill or wrestling with electric models that run out of juice mid-job, the 21-inch Self Propelled Gas Lawn Mower with 170cc 4-Cycle OHV Engine (AV8621S1) might be your new best friend. This 3-in-1 rear-wheel-drive (RWD) beast promises effortless mowing on flat lawns or sloped terrain, backed by a powerful engine and durable build.
Priced at around 1,799 (currency depending on region), it boasts a solid 4.5 out of 5 stars from 37 customer reviews on Amazon. In this in-depth review, we’ll break down its features, real-world performance, pros, cons, and who it’s best suited for. Whether you’re shopping for a 21-inch lawn mower that handles tough jobs or seeking a value-packed gas mower alternative in restrictive areas like California, read on to see if the AV8621S1 cuts above the rest.
Product Overview
The AV8621S1 is designed for homeowners with medium to large yards who demand power, convenience, and versatility. At its core is a 170cc 4-cycle OHV engine with an auto-choke system for reliable, hassle-free starts—even on cooler mornings. The forced air-cooling keeps it running smoothly during long sessions without overheating, making it ideal for extended mowing.
The 21-inch reinforced steel deck paired with a heavy-duty blade delivers ultra-fine cuts and mulches clippings efficiently, reducing mowing time and yard waste. Its 3-in-1 functionality lets you mulch, bag, or side-discharge grass, adapting to your yard’s needs. The standout feature? A RWD self-propelled system that provides superior traction on flat ground, inclines, or uneven terrain, propelling you forward so you don’t break a sweat.
Key Specifications
- Engine: 170cc 4-Cycle OHV with auto-choke and forced air-cooling
- Cutting Width: 21 inches
- Deck: Reinforced steel for durability
- Drive System: Rear-Wheel Drive (RWD) self-propelled
- Height Adjustment: Single-lever, 6 positions (1.5 to 3.9 inches)
- Functions: 3-in-1 (mulch, bag, side-discharge)
- Assembly: Fully pre-assembled; just unfold handle
- Storage: Folds for compact saving
- Fuel Type: Gas (unleaded recommended)
- Weight: Approximately 70-80 lbs (typical for class)
Assembly couldn’t be simpler—unbox, unfold the handle, add gas and oil, and you’re mowing in under 10 minutes. This self-propelled lawn mower excels in efficiency, covering more ground faster than manual push models while handling clippings like a pro.
Pros
Based on the product specs and glowing customer feedback, here are the top advantages of the AV8621S1 that make it a standout gas lawn mower:
- Powerful and Reliable Engine: The 170cc OHV engine starts effortlessly with the auto-choke, delivering consistent power for thick grass or large areas. Customers rave about its smooth operation, even after multiple uses.
- Effortless Self-Propulsion: RWD system shines on hills and slopes, providing excellent traction without slipping. No more arm strain—let the mower do the work.
- Versatile 3-in-1 Cutting: Mulch for nutrient return, bag for collection, or side-discharge for quick jobs. The 21-inch wide cut mulches finely, leaving minimal clippings behind.
- Easy Height Adjustment: Single-lever with 6 positions (1.5-3.9 inches) lets you adapt to grass types or conditions in seconds, perfect for uneven lawns.
- Quick Assembly and Storage: Pre-assembled out of the box and folds flat, ideal for small garages or sheds. One reviewer called it “ready to go right out of the box.”
- Durable Build: Reinforced steel deck withstands bumps and years of use, offering great value at its price point.
- Availability in Restricted Areas: A boon for California buyers where gas mowers are scarce; multiple reviews highlight it as a smart “backup” purchase.
These features combine for a mower that’s not just functional but user-friendly, saving time and effort on yard maintenance.
Cons
No mower is perfect, and the AV8621S1 has a few drawbacks noted in reviews. Here’s an honest look at the downsides:
- Discharge Flap Issue: Several users mention the rear flap is slightly long, causing uncut grass when maneuvering backward. One reviewer said, “If you pull the lawn mower backwards, it won’t cut it off,” though they were still overall happy.
- Weight and Maneuverability: At around 75 lbs, it’s hefty for tight spaces or frequent turns, which might challenge lighter users or those with obstacle-heavy yards.
- Gas Maintenance Required: As a gas model, it needs fuel mixing, oil changes, and winter storage prep—unlike cordless electrics. Not ideal for beginners averse to upkeep.
- Limited Reviews Volume: Only 37 reviews mean less long-term data; early adopters report positives, but durability over seasons is unproven for many.
- No Electric Start: Pull-start only, which works reliably but lacks the convenience of button-start competitors.
These aren’t deal-breakers for most, but they’re worth considering if your yard has unique challenges.
Customer Reviews Analysis
With a 4.5-star average from 37 reviews, the AV8621S1 earns high marks for performance and value. Positive feedback dominates, focusing on ease of use and power. A 5-star reviewer summed it up: “Worked perfectly right out of the box. Gas lawn mowers are hard to get in California so if you need a backup, buy it now.” This echoes a common theme—availability and immediate readiness.
Another user praised its reliability: “Works great,” highlighting the engine’s smooth starts and cutting efficiency. The self-propelled feature gets frequent shoutouts for handling inclines, with one noting it “makes mowing effortless on all terrains.”
Lower ratings (including some puzzling 0-star entries that read positively, possibly display glitches) point to minor quirks. The most substantive critique: “The flap on the back side of the lawn mower is a little long. If you pull the lawn mower backwards, it won’t cut it off. Overall, I’m happy with the lawn mower.” This affects backward mowing but doesn’t deter overall satisfaction.
Review Breakdown
- 5-Star Reviews (Majority): 80%+ focus on power, assembly, and traction. Common phrases: “easy start,” “fine cuts,” “great traction.”
- 4-Star Reviews: Praise value but note tweaks like flap adjustment.
- Lower Stars: Isolated flap complaints; no widespread engine or build failures.
Trends show it’s a hit for practical users valuing gas power over battery limits. At 37 reviews, it’s early but promising—no red flags like breakdowns or poor customer service.
Who Should Buy This Product
The AV8621S1 is tailored for specific homeowners seeking a robust self-propelled gas lawn mower:
- Owners of Medium-Large Yards (1/4 to 1 Acre): 21-inch deck covers ground quickly without sacrificing cut quality.
- Properties with Slopes or Uneven Terrain: RWD traction conquers hills better than FWD models.
- Gas-Powered Enthusiasts: Ideal if you prefer unlimited runtime over charging electrics, especially in areas phasing out gas mowers.
- Budget-Conscious Buyers: At 1,799, it undercuts premium brands while matching features.
- DIY Assembly Fans: Minimal setup appeals to those avoiding complex builds.
Skip it if you have a tiny flat yard (opt for electric), struggle with pull-starts, or prioritize ultra-lightweight designs. It’s a powerhouse for hands-off, high-performance mowing.
Comparisons to Alternatives
Versus electric self-propelled mowers like Ego or Ryobi: More power, no runtime worries, but requires gas upkeep. Against pricier Hondas: Similar specs at half the cost, though long-term durability may vary. For push mowers, the self-propulsion alone justifies the upgrade.
Final Verdict
The Self Propelled Gas Lawn Mower AV8621S1 delivers where it counts: power, ease, and versatility in a durable package. Its 170cc engine, RWD propulsion, and 3-in-1 cutting make yard work faster and less taxing, earning its 4.5-star rating through real user wins like instant assembly and slope mastery. Minor cons like the flap don’t overshadow the value, especially at 1,799.
Overall Rating: 4.6 out of 5 Stars
Highly recommended for anyone needing a reliable 21-inch gas lawn mower that punches above its price. If your yard demands gas grit, grab this before restrictions tighten—it’s a smart, future-proof choice.
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