DK2 18" Trencher – 7 HP 212cc Gas Engine (OPT118-V2)

18" Maximum Trenching Depth • 4" Wide Trench • 7 HP 212cc OHV Engine • 21 Carbide Cutting Teeth • 5 Depth Positions

Make quick work of irrigation, drainage, electrical conduit, landscape edging, and other trenching projects with the DK2 OPT118-V2 18-Inch Trencher. Powered by a 7 HP 212cc OHV gasoline engine, this heavy-duty walk-behind trencher combines a rugged cutting chain, 21 carbide-alloy cutting teeth, and a 6-inch side off-loading auger to dig consistent trenches while moving excavated soil away from the cut.

With five adjustable depth positions and a maximum trench size of 4 inches wide × 18 inches deep, the OPT118-V2 gives you the flexibility to handle everything from shallow landscape projects to deeper utility and drainage installations.

Large 15-inch off-road tires with auto-lock-in-reverse capability, an adjustable handle, and an integrated safety shut-off grip help provide the traction and control needed for demanding trenching work.

Key Features & Benefits

• 7 HP 212cc OHV Gas Engine
  Provides dependable power for residential, landscaping, agricultural, and light commercial trenching applications.

• Up to 18" Trenching Depth
  Dig channels up to 18 inches deep for irrigation lines, drainage, conduit, landscape projects, and other underground installations.

• 4" Wide Trench
  Produces an approximately 4-inch-wide channel, providing useful clearance without excavating an unnecessarily wide area.

• 5 Adjustable Depth Positions
  Choose the appropriate digging depth for the project rather than always trenching at the full 18-inch capacity.

• 21 Carbide Alloy Cutting Teeth
  High-pressure carbide cutting teeth provide aggressive cutting performance and are designed for demanding soil conditions.

• Quick-Change Cutting Teeth
  Individual cutting teeth can be replaced as they wear, simplifying long-term maintenance of the trenching chain.

• 63" Trenching Chain
  Heavy-duty chain assembly provides the cutting reach required for the machine's 18-inch maximum digging depth.

• 400 RPM Cutting System
  The tri-cut trenching chain operates at approximately 400 RPM for efficient soil excavation.

• 6" Side Off-Load Auger
  Moves excavated soil away from the trench to help maintain a cleaner, more accessible channel.

• Auto-Locking Reverse Wheels
  Large tires automatically lock during reverse trenching operation to help provide traction and controlled cutting.

• 15" Off-Road Tires
  Large 6.00-6 tires with approximately 15-inch outside diameter help the machine travel across uneven outdoor terrain.

• Adjustable Handle with Safety Control
  Operator controls include an adjustable handle with release and stop safety hand grip.

• Heavy-Gauge Steel Construction
  Built around a rugged steel chassis for demanding outdoor use.

Dig Up to 18 Inches Deep

The OPT118-V2 is designed to produce trenches measuring up to:

4" Wide × 18" Deep

Five selectable depth positions let you match the trench depth to the job instead of excavating deeper than necessary.

This makes the trencher useful for a variety of applications, including:

• Irrigation systems
• Sprinkler lines
• Landscape drainage
• Low-voltage wiring
• Electrical conduit
• Underground utility sleeves
• Landscape lighting
• Garden irrigation
• Property drainage
• Farm and ranch projects
• Dog fencing and boundary wiring
• General property improvements

21 Carbide Alloy Cutting Teeth

The OPT118-V2 uses 21 high-pressure carbide alloy cutting teeth positioned along the trenching chain.

The tri-cut tooth configuration is designed to break apart soil as the chain rotates, allowing the machine to excavate a narrow channel while the side auger moves loosened material away from the trench.

The cutting teeth are also quick-change, allowing worn teeth to be replaced without replacing the complete chain assembly.

6" Side Off-Loading Auger

Digging the trench is only part of the job. Excavated material also has to be moved away from the opening.

The integrated 6-inch side off-load auger carries loosened soil away from the cutting area as the machine works.

This helps:

• Keep the trench opening visible
• Reduce soil falling immediately back into the trench
• Maintain a cleaner excavation path
• Make conduit or pipe installation easier after digging

Five Depth Positions

Different installations require different trench depths. The OPT118-V2 provides five adjustable cutting-depth positions, allowing the operator to tailor trench depth to the application.

For example, a shallow landscape installation may not require the full 18-inch cutting depth, while drainage or conduit work may benefit from a deeper channel.

Heavy-Duty Drive System

The OPT118-V2 uses a powered trenching chain and auger system to transfer engine power directly into the cutting assembly.

Published specifications include:

• 63" trenching chain
• 180 ft/min chain speed
• 400 RPM cutting system
• 21 carbide cutting teeth
• 6" side off-loading auger

The published 180 ft/min specification refers to chain speed, not the machine's forward or backward ground-travel speed.

Auto-Locking Reverse Wheels

The trencher is designed to cut while operating in reverse.

Its 15-inch 6.00-6 wheels automatically lock during reverse operation, helping the operator maintain controlled movement while the cutting chain works through the soil.

This design provides the traction needed to progressively pull the cutting assembly through the trench.

Operator Controls & Safety

The adjustable handle incorporates operator controls and a release-and-stop safety hand grip.

Ideal Applications

The DK2 OPT118-V2 is a strong choice for:

• Homeowners
• Landscapers
• Property maintenance crews
• Farms and ranches
• Irrigation contractors
• Drainage projects
• Landscape lighting installation
• Underground conduit installation
• Fencing projects
• Rental applications
• General property improvement

Quick Specifications

Package Contents

• DK2 OPT118-V2 18" Trencher
• 7 HP 212cc OHV engine
• 63" trenching chain with 21 carbide teeth
• 6" side off-load auger
• OPT118-V2 Operator's manual

Fuel and engine oil should not be assumed included.

Warranty

Published manufacturer coverage for the OPT118-V2 includes:

• 2-Year Engine Warranty
• 1-Year Limited OEM Warranty – Residential Use
• 90-Day Limited Warranty – Commercial Use

Warranty coverage is subject to the manufacturer's terms and exclusions.

Frequently Asked Questions

How deep will the DK2 OPT118-V2 dig?
It can create trenches up to 18 inches deep.

How wide is the trench?
The published trench width is approximately 4 inches.

Can I adjust the digging depth?
Yes. The OPT118-V2 provides five depth positions.

What engine does it use?
The V2 model is powered by a 7 HP 212cc OHV gasoline engine.

How many cutting teeth does it have?
The trenching chain uses 21 carbide alloy high-pressure cutting teeth.

Are the teeth replaceable?
Yes. The cutting system uses quick-change teeth that can be replaced as they wear.

What does the side auger do?
The 6-inch side off-load auger moves loosened soil away from the trench as you dig.

How fast does the chain move?
The published chain speed is approximately 180 ft/min, with the cutting system operating at approximately 400 RPM.

Does 180 ft/min mean the trencher moves through the ground that fast?
No. That figure refers to the cutting chain speed, not the actual trenching travel rate.

How much does the trencher weigh?
The assembled weight is approximately 335 lbs.

Is this the same as the older OPT118 with the Kohler engine?
No. The OPT118-V2 is the newer configuration using a 7 HP 212cc OHV engine. Older OPT118 specifications may reference a Kohler CH270 engine, so specifications from the two versions should not be mixed.