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Electric 13” Dethatcher and Scarifier
GV1212B COMBO
Learn how to set up and use your dethatcher and scarifier with instruction manuals, user guides, and FAQs.
Setting Up
Assembling the Handles
1） Lower Handle: Insert the lower handles into the deck holes and secure them using the provided screws.
2）Middle Handle: Align the middle handles with the lower handles and secure them with the bolts and wing nuts.
3）Upper Handle: Attach the upper handle to the middle handles using the remaining bolts and wing nuts.
4）Cable Clips: Secure the power cable to the handle frame using the provided cable clips.
Assembling & Installing the Grass Collection Bag
1）Assemble Bag: Pull the collection bag over the metal frame and snap the plastic clamping sleeves onto the frame.
2）Install on Product: Lift the rear safety guard flap and hook the collection bag onto the notches on the housing.
Adjusting the Working Depth
1）Select Depth: Pull the height adjustment lever toward the wheel and move it to the desired position.
2）Range: Choose from 19 positions: -0.39 -0.19 inch (-10 -5 mm) for Scarifier Cylinder; 19 positions: -0.19 -0.39 inch (-5 -10 mm) for Dethatcher Cylinder.
Maintenance
Your LawnMaster 13" Scarifier and Lawn Dethatcher GV1212B Combo cylinders need to be regularly checked and cleaned to preserve performance and encourage healthy lawn growth. If the tines or blades become worn or damaged, the cylinder should be replaced immediately to avoid excessive vibration or reduced efficiency. It is quick and easy to do. Always ensure the product is disconnected from the power supply and wear heavy gloves before performing any maintenance on the cylinders.
Specifications
Model Number
GV1212B COMBO
Electric Or Cordless
Electric
Cutting Width
12-Inches
Height Adjustments
19 Positions
Front Wheel Dimensions
6.7-Inches
Rear Wheel Dimensions
3.9-Inches
Folding Handles
Yes
No-Load Speed
3400 RPM
Collection Bag Capacity
7.4-Gallons
Unit Weight
24.69lbs
Warranty
2-Year Limited
Spare Parts
Our aim is to keep it personal. Our friendly customer service team are there if you need a helping hand.
Support
Frequently Asked Questions
What is a scarifier?
A scarifier aerates soil and removes compacted natural materials like thatch, which builds up on your lawn over time. It creates a longer-lasting and healthier lawn. If you only have a minor amount of thatch, we recommend using the dethatcher over the scarifier.
Can l use this when my lawn is wet?
No, do not use this tool in damp or wet conditions or operate in the rain.
What type of extension cord should l use?
Make sure your extension cord is in good condition. Whe nusing an extension cord, be sure to use one heavy enough to carry the current the product will draw. An undersized cord will cause overheating. We recommend reviewing the extension cord guide on page 8 of the operator's manual.
When should l use the collection bag?
We recommend using the collection bag when dethatching, but not when scarifying.
Why did my unit turn off during use?
This product is equipped with an overload protection function, and it will be activated in the following circumstances:
1）If the cutting device is wrapped in a buildup of debris
2）If the material scarified is larger than the motor capacity.
3）Where there is too much resistance against the cutting device.
When the circuit breaker has been activated, switch off the product and disconnect it from the power supply. Let the product cool down and clear the problem before restarting.