Onyx 21" JX Plus Burnisher – 708cc Engine

The Onyx JX Plus 21" Burnisher is designed for comfort, safety, and professional performance in demanding environments. Capable of burnishing up to 34,000 square feet per hour, it’s an excellent solution for maintaining vinyl tile, terrazzo, and concrete floors. An integrated vacuum system with a patented floating shroud ensures outstanding dust control, keeping work areas clean and operators safe.

Powered by a dependable 708cc LPG engine featuring an LEHR fuel system and electric clutch, this machine incorporates advanced safety features including an automatic emission shutdown device. With its ergonomic design, quiet operation, and rugged steel frame, the JX Plus is ideal for use in schools, airports, grocery stores, and retail facilities.


Included in Your Package:

  • Onyx 21" JX Plus Burnisher w/ 708cc Engine

  • Emission Shutdown System

  • 21" Pad Driver

  • 20lb Steel Fuel Tank with Overfill Protection Device

  • Microfiber Vacuum Bag


Key Features

High-Performance Engine
708cc 19hp EPA-certified LPG engine provides reliable power and efficiency.

Dust Containment System
Floating brush skirt and 2.5" vacuum port deliver effective dust collection.

Emission Safety Monitoring
Onboard system provides real-time data with automatic shutdown if emissions rise too high.

Quiet & Comfortable Use
Operates at less than 87 dBA with ergonomic controls and vibration isolators for operator comfort.

Rugged Build
Heavy-duty powder-coated steel frame ensures long-lasting durability.

Versatile Pad Options
Supports 21", 24", or 27" pad sizes with variable speeds between 1,200–2,100 RPM.

Advanced Safety Features
Equipped with an electric clutch and internal vaporizer to prevent regulator freezing.

Extended Runtime
Runs up to 6 hours on a single 20lb LPG cylinder.


Specifications

Product Function Floor Burnishing
Operation Mode Walk-Behind Pad Assist
Power LX700 20hp Propane Engine
Performance 34,000 SqFt per hour
Working Width 21"
Dust Control Floating Shroud with Dust Collection Bag
Run Time 6 Hours Per 20lb Propane Cylinder
Pad / Brush Size 21"
Pad Speed 1200-2100 RPM
Dimensions 21"W x 53"L x 48"H
Clutch Included
Emission Monitoring System Included

Product Documents

JX-700 Data Sheet

Product specification and additional features.  

Operator Manual

Full operation, maintenance, and safety guide.

Illustrated Parts List

Complete parts list and ordering information.

Wiring Diagram

Complete electrical wiring diagram for troubleshooting.

Product Videos

 

Troubleshooting a Machine That Does Not Crank

Learn how to diagnose and repair an engine that does not start.

 

Troubleshooting a Machine that Starts but Dies

Learn how to diagnose and repair an engine that starts, but quickly dies when the key is in the RUN position.

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