Kubota KX018-4 Mini Excavator – Parts, Specs & Serial Numbers

Description:

The Kubota KX018-4 Mini Excavator delivers impressive power and versatility in a compact footprint, making it a top choice for residential excavation, landscaping, and utility work. With zero tail swing, an adjustable track width, and advanced control options, the KX018-4 is ideal for tight job sites where precision and maneuverability are essential.

Powered by the dependable Kubota D902-E4 diesel engine, the KX018-4 provides responsive hydraulics, reduced emissions, and easy service access. Its spacious cab, powerful digging capabilities, and minimal maintenance needs make it one of the most reliable machines in the 1.8-ton class.

Key Specifications & Features

Engine

• Model: Kubota D902-E4

• Type: 3-cylinder, liquid-cooled, Tier 4 Final diesel

• Displacement: 0.898 L (54.8 cu in)

• Power Output: 16.1 hp (12 kW) @ 2,300 RPM

Hydraulics

• Total Hydraulic Flow: 10.6 GPM

• Auxiliary Hydraulic Flow: 7.9 GPM

• Hydraulic Pressure: 2,611 psi (180 bar)

• Boom Swing Angle: Left 70°, Right 55°

Transmission & Travel

• Travel Speeds: Low – 1.3 mph | High – 2.5 mph

• Swing Speed: 9.1 RPM

Dimensions

• Operating Weight: 3,747 lbs (1,700 kg)

• Max Digging Depth: 7 ft 10 in (2.4 m)

• Max Reach at Ground: 13 ft 5 in (4.1 m)

• Track Width: Adjustable from 3 ft 3 in to 4 ft 1 in (990–1,240 mm)

Performance

• Bucket Breakout Force: 3,417 lbf

• Arm Digging Force: 1,977 lbf

• Zero Tail Swing: Ideal for confined workspaces

Maintenance Essentials & Common Parts

• Hydraulic cylinder seal kits

• Rubber tracks (230mm wide)

• Final drive motors

• Engine filters, glow plugs, and belts

• Control valve O-rings and kits

Pro Tip:

The expandable undercarriage is controlled via a lever under the seat—be sure to grease the sliding components regularly to prevent binding or wear.

Common Issues & Quick Fixes

Blade Lift Cylinder Leaks

A frequent issue after heavy use. Resolve using blade cylinder seal kits.

Track Misalignment or Tension Loss

Inspect the grease-filled adjusters and replace worn tracks with OEM-grade rubber tracks.

Engine Starts Slow in Cold Weather

Usually caused by failing glow plugs or clogged fuel filters—replace with engine service parts.

Serial Number Location

The serial number is located on a metal plate mounted to the right front frame, near the boom arm or track base. Always refer to this when ordering parts to ensure compatibility.