Industrial Equipment Repair in Flagstaff, AZ

On-Page Navigation:

Small Engine Repair for Big Industrial Jobs

At Flag Tool Equipment Repair, we know that industrial equipment is the heartbeat of many businesses throughout Flagstaff, AZ. Whether you're running a construction crew, managing a facility, or working on-site with heavy-duty tools, you rely on machines that can handle serious workloads.


Our shop is proud to offer specialized repair services for industrial-grade equipment—including welders, diesel engines, hot washers, and mounted tools. We understand the complexities of these machines and apply a precise, methodical approach to every repair. You won’t get a quick patch job here—you’ll get durable, reliable fixes that keep your equipment moving.

When it comes to heavy-duty tools, downtime is costly. That’s why we work fast, communicate clearly, and stand behind everything we do. We’ll get your equipment back to work—where it belongs.

Brands We Service with Certified Precision

We are proud to be authorized service providers and dealers for trusted industrial brands, including:

  • Briggs & Stratton
  • Onan
  • Honda Engine
  • MiTM
  • Champion
  • Westinghouse
  • Gardner

Our connection to these manufacturers gives you peace of mind—because we use genuine replacement parts, follow warranty guidelines, and repair your equipment to exact factory standards.

Explore Our Industrial Equipment Services

Welder Repair Services

Welders demand precision—both in their output and in their maintenance. Whether you're using a MIG, TIG, or stick welder, problems like erratic arcs, poor penetration, or electrical inconsistencies can bring your work to a halt. At Flag Tool Equipment Repair, we offer:

  • Power supply diagnostics
  • Circuit board inspection and repair
  • Drive motor and wire feed system servicing
  • Preventive maintenance and tune-ups

We understand that welders are essential in fabrication, construction, and repair environments. Let us make sure yours is running clean, safe, and strong.

Hot Washer Maintenance and Repair

Industrial cleaning relies on power—and your hot washer is the frontline of that operation. These machines handle everything from heavy mud to grease, but when pressure or temperature drops, cleaning stops.

We service both portable and mounted units, offering:

  • Burner and fuel system repairs
  • Pressure pump replacements
  • Leak inspections and hose replacements
  • Electrical and ignition diagnostics

Don’t wait until you’re staring at a half-cleaned job site. Get your hot washer back in shape fast—with a repair that lasts.

Diesel Engine Repair and Rebuilds

Diesel engines offer the torque and power you need for large-scale tasks—but they also require proper diagnostics and maintenance. Our shop provides expert service for industrial diesel engines found in:

  • Generators
  • Compressors
  • Pumps
  • Construction rigs

We handle everything from fuel system repairs to full rebuilds, including:

  • Injector cleaning and timing
  • Compression testing
  • Glow plug and starter diagnostics
  • Oil system service and leak checks

When your diesel engine falters, you lose time and productivity. Trust our team to bring it back to full power.

Mounted Equipment Service

Many industrial machines are mounted to trailers, platforms, or permanent fixtures. These units can be difficult to access—and even harder to service. Fortunately, we specialize in the kind of detailed repair work that mounted equipment requires.

We offer service for:

  • Trailer-mounted generators and pumps
  • Fixed hot washers or compressors
  • Frame-mounted specialty equipment

Our team is trained to inspect mounted systems for:

  • Vibration and stress wear
  • Pulley and belt failure
  • Electrical and switchboard issues
  • Overheating and structural stress

Whether it’s bolted to the floor or riding on a rig, we’ll make sure it runs as expected.

Why Businesses in Flagstaff Trust Flag Tool Equipment Repair

We’re a family-owned repair shop that’s deeply committed to honesty, craftsmanship, and reliability. Every job we take on is handled with care—because we know that your equipment isn’t just machinery—it’s a key part of your business.


  • We explain the repairs before we make them.
  • We only use quality parts.
  • We don’t cut corners.
  • We finish the job the right way—the first time.



Our reputation in the Flagstaff, AZ, community means everything to us, and we work hard to maintain it.

Let’s Get Your Equipment Back on Track

📍 Shop Location: 7011 US 89, Flagstaff, AZ

📞 Phone: (928) 773-9185

🕒 Hours: Monday – Friday, 8:00 AM to 5:00 PM

Whether it’s one machine or an entire fleet, we’re ready to help. Walk in, give us a call, or reach out to discuss your service needs.