GrindLazer HP DC1021 G Gas-Powered Scarifier

Graco GrindLazer HP DC1021 G Gas-Powered Scarifier

The Graco GrindLazer HP DC1021 G Gas-Powered Scarifier (Part Number: 25M994) is a high-production walk-behind concrete and asphalt scarifier designed for professional line removal, surface profiling, and coating removal applications. Built for demanding commercial and roadway work, this unit combines a 21 HP Vanguard® gasoline engine, a self-propelled high-production chassis, and a 10-inch cutting width to deliver efficient, controlled surface removal with reduced operator fatigue. It is engineered for precision work such as parking lot striping removal, roadway marking cleanup, and light-to-medium scarifying tasks.

Product Information

The DC1021 G is part of Graco’s High Production Series and is optimized for aggressive yet controlled material removal on concrete and asphalt surfaces. Its reverse “Up-Cut” cutting direction improves removal efficiency for line striping, surface coatings, and inlay/grooving applications, making it especially effective in roadway and infrastructure maintenance work. 

The unit is designed to be used with Graco’s LineDriver system, which significantly increases productivity and reduces operator fatigue during long runs. The self-propelled configuration provides steady, consistent movement, allowing operators to maintain uniform depth and finish quality across large surface areas.

Depth control is managed through Graco’s DialDown system, which allows easy, multi-position adjustment for precise cutting depth settings. The InstaCut system enables tool-free engagement of the cutting deck, improving flexibility for both removal and inlay work while allowing the deck to float over uneven surfaces for improved consistency. (Graco)

A vibration reduction system is built into the design, including pneumatic tires and ergonomic handle geometry, helping reduce operator fatigue during extended use. The machine also features a heavy-duty filtration system for improved engine life and reliability in dusty jobsite environments. (Graco)

Common Applications and Uses

The GrindLazer HP DC1021 G is commonly used for:

• Parking lot line striping removal

• Roadway and highway marking removal

• Concrete and asphalt scarifying

• Surface profiling and texturing

• Inlay and grooving preparation

• Construction zone marking cleanup

• Junction and intersection marking removal

• Surface leveling and correction

• Light industrial slab preparation

• Municipal maintenance projects

• Sidewalk and pathway resurfacing prep

• Decorative and functional concrete surface prep

• Airport and runway marking removal (light duty)

• Bridge and infrastructure maintenance tasks

Technical Specifications

Specification	Details
Manufacturer	Graco
Product Name	GrindLazer HP DC1021 G Gas-Powered Scarifier
Manufacturer Part No.	25M994
Power Source	Gasoline
Engine	Vanguard® 21 HP
Starting System	Electric Start
Cutter Type	Drum
Cutter Drum Diameter	5 in (127 mm)
Maximum Cutting Width	10 in (254 mm)
Cut Direction	Reverse / Up-Cut
Depth Adjustment	DialDown system
Drive System	Self-propelled (LineDriver compatible)
Vacuum Port	Yes
Frame	Heavy-duty high-production chassis
Drive System	TriBelt drive system

Features

• High-production scarifier for line removal and surface prep

• 21 HP Vanguard® engine with electric start

• Reverse “Up-Cut” cutting direction for efficient marking removal

• DialDown depth control system with multi-position adjustment

• InstaCut tool-free deck engagement system

• Self-propelled design compatible with LineDriver system

• Vibration reduction system for improved operator comfort

• TriBelt drive system for reliable power transfer

• Heavy-duty filtration system for extended engine life

• Pneumatic tires and ergonomic handles for smoother operation

• Vacuum port for dust control system integration

• Designed for roadway, parking, and municipal maintenance work

Compatible Applications

This machine is suited for concrete and asphalt surfaces in municipal roadwork, parking facilities, airports, commercial properties, construction zones, and infrastructure maintenance environments where efficient line removal and surface preparation are required.

Standard Equipment

The GrindLazer HP DC1021 G typically includes the scarifier unit, 21 HP Vanguard® engine, drum cutting system, DialDown depth control, InstaCut deck system, TriBelt drive system, pneumatic tire assembly, vacuum port connection, and operator documentation.