The Yanmar CT118 is a specialized, rubber-tracked compact tractor designed for high traction and low ground pressure. Originally engineered for the Japanese domestic market, it has become a popular grey-market import worldwide for small-scale farmers, landscapers, and vineyard operators who need to navigate demanding terrain without compacting the soil.
Below is an in-depth breakdown of the Yanmar CT118, covering its core specifications, advantages, and ideal applications. Core Specifications
The Yanmar CT118 brings a unique blend of tracked mobility and small-footprint maneuverability. Engine: Yanmar 3-cylinder liquid-cooled diesel. Power Output: 18 horsepower. Drive System: Full rubber tracks (Crawler). Aspiration: Naturally aspirated. Rear Hitch: Category 1 three-point linkage.
PTO (Power Take-Off): Standard rear PTO for running active implements like tillers and flail mowers. Key Advantages of the CT118
The standout feature of the CT118 is its tracked undercarriage, which drastically changes its performance profile compared to a standard wheeled compact tractor. 1. Exceptional Flotation and Low Ground Pressure
Wheeled tractors concentrate their entire weight on four small contact patches. The CT118 distributes its weight across the entire length of its rubber tracks. This ultra-low ground pressure prevents soil compaction, which is critical for maintaining healthy soil structure in gardens, greenhouse beds, and delicate agricultural operations. 2. Superior Traction in Challenging Conditions
The continuous contact of the tracks allows the CT118 to crawl through deep mud, loose sand, and wet clay where wheeled tractors would quickly spin out and get stuck. This makes it an ideal machine for early spring field prep or working in low-lying, boggy areas. 3. Increased Stability on Slopes
The wide stance and low center of gravity inherent to crawler tractors make them much safer on hillsides and uneven embankments. The tracks grip the slope firmly, reducing the risk of sliding sideways or rolling over. 4. High Pushing and Pulling Power yanmar ct118
Traction translates directly into pulling power. Despite having a modest 18-horsepower engine, the CT118 can put a high percentage of that power directly to the ground. It can pull heavier ground-engaging implements (like small subsoilers or discs) than a wheeled tractor of equivalent horsepower. Ideal Use Cases
While it cannot match the top travel speeds of a wheeled machine, the CT118 excels in specialized niches:
Wetland and Rice Paddy Farming: Perfect for working in saturated soils where traditional tires create deep, destructive ruts.
Orchards and Vineyards: The narrow profile allows it to fit between tight rows, and the tracks provide the grip needed to pull sprayers up muddy terraced hills.
Commercial Landscaping: Ideal for grading and site prep on soft, finished lawns where minimizing turf damage is a priority.
Small-Acreage Market Gardening: Used primarily with a rotary tiller (rotovator) to prep perfectly loose seedbeds without packing down the subsoil. What to Know Before Buying
Because the CT118 is generally found as a used Japanese import in western markets, buyers should keep a few logistical points in mind: The Yanmar CT118 is a specialized, rubber-tracked compact
Track Condition is Critical: Check the rubber tracks closely for dry rotting, deep cuts, or missing lugs. Replacing tracks on imported Japanese crawlers can sometimes be costly or require ordering from specialized overseas suppliers.
Check the PTO Rotation: Japanese tractors sometimes feature multi-speed PTOs or counter-clockwise rotations on specific models. Ensure the PTO on your specific unit matches standard clockwise implements if you plan to use standard off-the-shelf attachments.
Parts Availability: While Yanmar diesel engine parts are widely available globally, specific chassis, body, and track-undercarriage parts for the CT118 may require sourcing through specialized grey-market tractor parts dealers.
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Since this model is a rebadged version of the LS Tractor MT118 (Yanmar manufactures the chassis, and LS provides the platform in certain markets), parts and service procedures are often cross-compatible. Engine Reliability: The 3TNV76 is bulletproof
Adhering to this schedule is critical for the longevity of the Yanmar diesel engine.
| Item | Interval | Action | | :--- | :--- | :--- | | Engine Oil | Every 100 Hours | Change oil & filter. | | Hydraulic Oil | Every 200 Hours | Check level; Change every 400-500 hours. | | Air Filter | Every 50 Hours | Clean element; Replace annually or if damaged. | | Fuel Filter | Every 200 Hours | Replace (drain water separator every 50 hours). | | Coolant | Every 2 Years | Flush and replace with standard antifreeze. | | Front Axle | Every 100 Hours | Check oil level; Change every 400 hours. | | Grease Fittings | Every 50 Hours | Grease loader pivot points, 3-point hitch pins. |
❌ No position control on 3-point hitch – implements may drift down or require constant adjustment.
❌ Lift capacity (both loader and hitch) is lower than similar-aged Kubota BX or JD 1025R.
❌ Parts availability – since the CT118 was discontinued years ago, some dealer networks (especially former Cub Cadet/Yanmar dealers) have limited stock. Engine parts are easy; body/fender/hydraulic block parts are harder.
❌ Aftermarket support – fewer pre-made attachment kits (e.g., third-party cabs, thumb kits) compared to JD/Kubota.
❌ No cruise control standard (rare for a SCUT in its era, but JD offered it).
At the core of the Yanmar CT118 is the Yanmar 3TNV76 diesel engine.
The "TNV" line is legendary in the industrial world. These are liquid-cooled, direct-injection engines. Unlike gas-powered zero-turns, the CT118 sips fuel. You can run this machine for a full weekend of trenching or tilling on a single tank.
One of the critical selling points here is low-end torque. While it only revs to about 3,000 RPM, the CT118 produces peak torque at low RPMs. This means when you put a load on it—like a rototiller digging into hard clay—the engine lugs down without stalling.
The CT118 uses a Category 1 3-point hitch, which is the industry standard for sub-compact tractors.