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AMERISUN AMRISUN 21-Inch Self-Propelled Gas Lawn Mower for vs LawnMaster GVB1316 Electric 16” 13 Amp Dethatcher

Updated July 2026 — AMERISUN AMRISUN 21-Inch Self-Propelled Gas Lawn Mower for wins on price and engine size, LawnMaster GVB1316 Electric 16” 13 Amp Dethatcher wins on collection size and height adjustment.

The AMRISUN offers superior power and versatility for larger yards, while the LawnMaster is a budget-friendly option for dethatching.

Why AMERISUN AMRISUN 21-Inch Self-Propelled Gas Lawn Mower for is better

Power

AMRISUN has a 170cc gas engine compared to LawnMaster's 13 Amp motor.

Versatility

AMRISUN features a 3-in-1 mowing function, unlike LawnMaster's 2-in-1.

Cutting Width

AMRISUN has a larger 21-inch cutting deck versus LawnMaster's 16-inch.

Why LawnMaster GVB1316 Electric 16” 13 Amp Dethatcher is better

Price

LawnMaster is significantly cheaper at $124.99.

Weight

LawnMaster is lighter and easier to handle.

Collection Size

LawnMaster has a 12-gallon collection bag, which is convenient.

Overall score

AMERISUN AMRISUN 21-Inch Self-Propelled Gas Lawn Mower for
85
LawnMaster GVB1316 Electric 16” 13 Amp Dethatcher
70

Specifications

SpecAMERISUN AMRISUN 21-Inch Self-Propelled Gas Lawn Mower forLawnMaster GVB1316 Electric 16” 13 Amp Dethatcher
Engine TypeGasElectric
Power Output170cc13 Amp
Mowing Functions3-in-12-in-1
Cutting Height1.5-3.9 in-0.35 to 0.35 in
Collection Bag1.4 bushel12 gallons

Dimension comparison

AMERISUN AMRISUN 21-Inch Self-Propelled Gas Lawn Mower forLawnMaster GVB1316 Electric 16” 13 Amp Dethatcher

Overview of the AMRISUN and LawnMaster

The AMRISUN 21-Inch Self-Propelled Gas Lawn Mower is designed for larger yards, while the LawnMaster GVB1316 is a more compact electric option that serves as both a dethatcher and scarifier. Each product targets different types of users based on yard size and maintenance needs. The AMRISUN is priced at $314.10, making it a more significant investment compared to the LawnMaster, which retails at $124.99, about 60% less expensive.

Power and Performance

The AMRISUN lawn mower boasts a powerful 170cc 4-stroke gas engine, providing robust cutting performance for medium to large yards. Its self-propelled feature makes it easier to navigate through various terrains, allowing for efficient yard work. In contrast, the LawnMaster operates on a 13 Amp electric motor, delivering up to 3700 RPM. This power is sufficient for dethatching and scarifying, but it may not match the raw cutting strength of the AMRISUN in thick grass. Users should consider whether they need the muscle of a gas mower or the convenience of an electric model.

Versatility and Functionality

The AMRISUN offers a versatile 3-in-1 mowing function, allowing users to mulch, side discharge, or collect grass clippings in a rear bag. This feature is particularly beneficial for those maintaining large gardens or professional landscaping, as it provides multiple options for lawn care. On the other hand, LawnMaster focuses on dethatching and scarifying, featuring a 2-in-1 function that helps remove thatch and improve soil aeration. The LawnMaster's adjustable height settings range from -0.35” to 0.35”, allowing for detailed lawn maintenance but lacks the mowing capabilities of the AMRISUN.

Design and Maneuverability

The AMRISUN is equipped with high wheels, featuring 10-inch rear wheels and 7-inch front wheels, making it easy to maneuver over hills and uneven terrain. This design is particularly advantageous for larger yards where obstacles may be present. Conversely, the LawnMaster features a sturdy design but is limited to a more compact 16-inch path, which may require more passes in larger areas. The AMRISUN’s larger cutting deck allows for quicker mowing sessions, making it more suitable for extensive lawns.

Adjustability Features

In terms of cutting height, the AMRISUN offers six adjustable positions ranging from 1.5” to 3.9”, enabling users to achieve a customized lawn look throughout the seasons. This adaptability is essential for maintaining healthy grass. Meanwhile, the LawnMaster provides a broader range of 14 height adjustments for its dethatching and scarifying functions, from -0.35” to 0.35”, allowing for versatility in lawn treatment. However, its lack of cutting height settings for mowing limits its overall utility compared to the AMRISUN.

Collection and Cleanup

The AMRISUN comes with a 1.4-bushel grass catcher, which reduces the frequency of trips to empty clippings, making lawn care more efficient. This feature is critical for users who prefer less downtime during their mowing sessions. The LawnMaster, on the other hand, offers a 12-gallon collection bag that makes it easy to collect and dispose of lawn debris. While both models address cleanup, the AMRISUN’s larger catcher provides an advantage for extensive mowing tasks, reducing interruptions.

Pricing Comparison

The pricing difference between the two products is significant. The AMRISUN is priced at $314.10, while the LawnMaster is available for $124.99, making it about 60% cheaper. This substantial price gap may influence buyers who are on a budget or those who require a tool strictly for grass dethatching. However, the investment in the AMRISUN could be justified by its powerful engine and broader functionality for larger yards, appealing to serious gardeners or landscapers.

Which should you buy?

Choosing between the AMRISUN 21-Inch Self-Propelled Gas Lawn Mower and the LawnMaster GVB1316 Electric Dethatcher and Scarifier depends on your specific lawn care needs. If you manage a large yard and require a powerful mower with versatile functionalities, the AMRISUN is the better option despite its higher price. However, if you are looking for a budget-friendly solution focused on lawn maintenance through dethatching and scarifying, the LawnMaster offers excellent value. Ultimately, your decision should align with the size of your yard, the type of maintenance you need, and your budget constraints.