Manuals / Harbor Freight Tools / Power Tools / Grinder

Harbor Freight Tools 91222 operating instructions Always keep the grinder clean, Carbon Brush

Models: 91222

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MAINTENANCE

WARNING:

DO NOT DISASSEMBLE.

This tool should be serviced by a qualified technician only. Incorrect reassembly can result in

electric shock, fire, or further damage to the tool.

Always keep the grinder clean

Dust and grit containing particles from metal grinding often accumulate on interior surfaces and could create an electrical shock hazard if not frequently cleaned out. On a regular basis, blow dust and grit out of the motor housing using compressed air. Never blow compressed air at greater than 10 PSI. Always wear goggles and dust mask when using compressed air.

CAUTION:

Never use solvents or other harsh chemicals for cleaning the non-metallic parts of the tool. Use a

clean, dry rag only.

Carbon Brush

Replace the carbon brush when it wears down to about 3/16” (5 mm) or sparking will occur. To change the CARBON BRUSH (#22) do the following:

Step 1: Using a flat tip screw driver, unscrew the BRUSH CAP (# 23) on the HOUSING (# 18).

Housing

Carbon Brush

(#22)

(#18)

(#23)

 

 

 

Brush Cap (#23)

 

Figure 6 — Replacing the Carbon Brushes

Step 2:

Replace the CARBON BRUSH with identical replacement parts from Harbor

 

Freight Tools.

Step 3:

Replace the BRUSH CAP on the HOUSING and screw-in to tighten.

SKU 91222

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Harbor Freight Tools 91222 Always keep the grinder clean, Housing Carbon Brush #22 #18 #23 Brush Cap #23
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91222 specifications

Harbor Freight Tools 91222 is a versatile and efficient tool that appeals to both professional tradespeople and DIY enthusiasts. Known for its affordability and impressive performance, the 91222 model stands out as a reliable option for various applications.

One of the most notable features of the Harbor Freight Tools 91222 is its powerful motor. Designed for heavy-duty tasks, it delivers sufficient torque and speed to tackle a range of projects. Whether you are drilling, sanding, or cutting, this tool ensures optimal performance without straining its components. The motor is also engineered for durability, making the 91222 a long-lasting addition to any toolbox.

The 91222 is equipped with user-friendly technologies that enhance control and precision. Its ergonomic design promotes comfortable handling, reducing fatigue during extended use. The tool's grip is designed to fit snugly in the hand, allowing for better maneuverability and more precise work. Furthermore, it features adjustable speed settings, enabling users to customize performance based on the specific requirements of a project.

Safety is a significant consideration in the design of the Harbor Freight Tools 91222. It includes several safety features to minimize risk during operation. The integrated safety switch prevents accidental starts, ensuring that the tool is only in use when the operator intends to use it. Additionally, the construction includes protective housing to safeguard internal components from damage.

The 91222 also emphasizes versatility, as it is compatible with a variety of attachments and accessories. This feature enhances the tool's functionality, allowing it to serve multiple purposes, from woodworking to metalworking.

Another key characteristic of the Harbor Freight Tools 91222 is its lightweight design. Weighing in at a manageable amount, this tool is easy to transport and handle, making it ideal for both home use and job site conditions.

Overall, the Harbor Freight Tools 91222 combines power, safety, and versatility while maintaining an affordable price point. With its robust performance, user-friendly features, and durable construction, the 91222 is an excellent choice for anyone looking to invest in reliable tools for their workshop or construction needs.