Greenworks GLM801600
Greenworks Pro 80V 21-Inch Push Lawn Mower User Manual
Model: GLM801600
Welcome
Thank you for choosing the Greenworks Pro 80V 21-Inch Brushless Lawn Mower. This high-performance tool is designed to provide efficient and quiet lawn care. This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your new lawn mower. Please read it thoroughly before first use.

The Greenworks Pro 80V system offers powerful, emission-free lawn care.
Important Safety Instructions
Always follow basic safety precautions to reduce the risk of fire, electric shock, and personal injury. Keep this manual for future reference.
- Read all instructions before operating the appliance.
- Wear appropriate personal protective equipment, including eye protection and sturdy footwear.
- Keep children and bystanders away from the operating area.
- Do not operate the mower in wet conditions.
- Inspect the area for objects that could be thrown by the blade.
- Always remove the battery pack when cleaning, servicing, or storing the mower.
Package Contents
Your purchase includes the following items:
- 21-Inch 80V Push Lawn Mower (Tool Only)
- Rear Bagging Attachment
- Side Discharge Chute
- Mulching Plug
- Operator's Manual

The Greenworks Pro 80V 21-Inch Push Lawn Mower and included accessories.
Setup
Assembly and Initial Setup
The lawn mower requires minimal assembly. Unfold the handles and secure them in place according to the instructions provided in the full user manual. Ensure all locking mechanisms are engaged before operation.

The mower features a durable 21-inch steel deck for robust performance.
Battery Installation
This mower is a 'tool only' product, meaning the battery and charger are sold separately. To install the battery, open the battery compartment cover, align the battery pack with the slot, and push it down until it clicks into place. Ensure the battery is fully charged before use.

The Greenworks 80V battery system powers over 25 tools, offering versatility.
Official Product Video: Greenworks 80V Family
This video showcases the range of Greenworks 80V tools and the interchangeable battery system.
Operating Instructions
Starting the Mower
The mower features an instant push-button start. Simply insert a charged 80V battery, press the start button, and pull the bail lever towards the handle to engage the blade.
Smart Cut Technology
The innovative Smart Cut Technology automatically increases the speed of the blade when more power is needed, such as in thicker grass, ensuring the best possible cut quality and optimizing battery life.

Smart Cut Technology adjusts blade speed for optimal cutting performance.
3-in-1 Functionality
This mower offers versatile 3-in-1 functionality:
- Mulching: Finely cuts grass clippings and returns them to the lawn as natural fertilizer.
- Rear Bagging: Collects clippings in the included rear bag for easy disposal.
- Side Discharge: Disperses clippings out of the side chute, ideal for taller grass.
Height Adjustment
Adjust the cutting height easily with the single-lever 7-position height adjustment, ranging from 1 inch to 4 inches, to suit your lawn's needs and grass conditions.

Easily adjust the cutting height with the convenient single-lever system.
Official Product Video: GreenWorks GLM801600 80V 21-Inch Cordless Lawn Mower Testimonial
This video demonstrates the ease of use and performance of the Greenworks GLM801600 mower.
Maintenance
Regular maintenance ensures optimal performance and extends the life of your Greenworks Pro 80V Lawn Mower.
- Cleaning: After each use, clean the underside of the mower deck to prevent grass buildup. Use a damp cloth to wipe down the exterior. Do not use water jets or immerse the mower.
- Blade Care: Periodically inspect the blade for sharpness and damage. A dull blade can tear grass, leading to an unhealthy lawn. Replace or sharpen the blade as needed.
- Battery Storage: Store battery packs in a cool, dry place away from direct sunlight and extreme temperatures. For long-term storage, ensure batteries are partially charged (around 50%) to maintain their health.
- Vertical Storage: The mower features vertical storage capability, allowing you to use up to 70% less space in your garage.
Troubleshooting
If you encounter issues with your lawn mower, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Mower does not start | Battery not fully charged or improperly inserted. | Ensure battery is fully charged and securely seated. |
| Reduced cutting performance | Dull or damaged blade; grass too tall or wet. | Sharpen or replace blade; mow when grass is dry; adjust cutting height. |
| Excessive vibration | Bent or unbalanced blade; loose components. | Inspect blade for damage; tighten all fasteners. If problem persists, contact support. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Greenworks |
| Model Number | GLM801600 |
| Power Source | Battery Powered (80V) |
| Cutting Width | 21 Inches |
| Cutting Height Positions | 7 (1 to 4 Inches) |
| Operation Mode | Manual Push |
| Item Weight | 57 Pounds |
| Product Dimensions | 60.5"D x 21.62"W x 36.5"H |
| UPC | 841821018191 |
Warranty and Support
Warranty Information
The Greenworks Pro 80V 21-Inch Push Lawn Mower comes with a 3-year warranty for added peace of mind. Please retain your proof of purchase for warranty claims.
Further Assistance
For detailed instructions, safety warnings, and comprehensive troubleshooting, please refer to the official user manual PDF:
Official Product Video: 80V Tools: Extreme Yard Control
This video highlights the robust power and performance of the Greenworks 80V tool line.
Related Documents - GLM801600
![]() |
Greenworks Pro 80V 21-inch Lawn Mower Operator Manual (LMB455) This comprehensive operator manual provides detailed instructions for the Greenworks Pro 80V 21-inch Lawn Mower (Model LMB455), covering safety guidelines, installation procedures, operation, maintenance, troubleshooting, technical specifications, and warranty information. |
![]() |
Greenworks Pro 21" 80V Lithium-Ion Cordless Mower Owner's Manual Comprehensive owner's manual for the Greenworks Pro 21-inch 80V Lithium-Ion Cordless Mower (Model 2500402CTBT). Covers safety, assembly, operation, maintenance, and troubleshooting. |
![]() |
Greenworks Pro 2506902 Lawn Mower Operator Manual This operator manual provides essential safety, operation, maintenance, and troubleshooting information for the Greenworks Pro 2506902 Lawn Mower (Model LMB401). |
![]() |
Greenworks MO80L415 80V Lawn Mower Operator Manual This operator manual provides comprehensive guidance for the Greenworks MO80L415, an 80V self-propelled, battery-powered rotary lawn mower. Designed for efficient lawn maintenance, this mower offers both cutting and mulching capabilities. |
![]() |
Greenworks 2511AZ 21-Inch 13 Amp Corded Electric Lawn Mower User Manual Comprehensive user manual for the Greenworks 2511AZ 21-inch 13 Amp corded electric lawn mower. Includes safety instructions, assembly, operation, maintenance, troubleshooting, and specifications for optimal use and care. |
![]() |
Greenworks M080L06 Pro 80V Electric Lawn Mower User Manual Comprehensive user manual for the Greenworks M080L06 Pro 80V electric lawn mower. Covers introduction, product overview, specifications, features, installation steps, and frequently asked questions for optimal lawn care. |





