Scag Turf Tiger II Commercial Zero Turn Mower - 61in Velocity Plus - 31hp Kawasaki WC DFI - STTII-61V-31DFI
The Scag Turf Tiger II 61in Zero Turn Mower is a top-tier commercial zero turn mower designed for superior durability, productivity, and comfort. This machine features the renowned Velocity Plus cutter deck, which delivers unmatched power, precision, and performance. The Turf Tiger II is engineered to tackle challenging terrains with ease, thanks to its ultra-low center-of-gravity design and infinitely variable speed control.
Powered by a 31hp Kawasaki WC DFI engine, this mower ensures optimal performance and efficiency. The Turf Tiger II also includes advanced features such as electric PTO blade engagement, a Tiger Eye Advanced Monitoring System, and a foldable Roll-Over Protective Structure (ROPS) for enhanced safety and convenience.
Features
- Velocity Plus Cutter Deck: Provides high-velocity discharge and a beautiful manicured cut, even at faster ground speeds. The deck features a redesigned cutting chamber and a massive discharge opening for maximum clipping dispersal.
- Ultra-Low Center-of-Gravity Design: Ensures superior stability and maneuverability, allowing you to tackle challenging terrains with confidence.
- Infinitely Variable Speed Control: Allows you to adjust your mowing speed up to 12mph forward and 6mph reverse, providing optimal versatility and efficiency.
- Electric PTO Blade Clutch: Engage the blades effortlessly and ensure safety with an adjustable air-gap for extended service life.
- Tri-Plate Cutter Deck Construction: Made from nearly 1/2in thick steel, ensuring solid performance and long life. Includes reinforcement plates at the cutter deck spindles and a replaceable trim-side wear pad.
- Cast-Iron Spindles: With tapered roller bearings and grease zerks, these spindles provide durability and ease of maintenance.
- Dual Hydrostatic Transaxles: With spin-on oil filters, these transaxles guarantee long-lasting performance and smooth zero-turn maneuverability.
- Tiger Eye Advanced Monitoring System: Monitors critical systems to ensure optimal performance and safety.
- Adjustable Anti-Scalp Rollers: Prevents scalp damage and ensures a consistent cut height.
Specifications
| Engine Brand |
Kawasaki WC DFI |
| Engine Power |
31 HP |
| Fuel Type / Capacity |
Gasoline, 12 gallons |
| Drive System Type |
Dual Pump and Motor |
| Pumps |
Hydro-Gear 16cc |
| Motors |
Parker 18 ci |
| Forward Ground Speed |
12 mph |
| Reverse Ground Speed |
6 mph |
| Parking Brake |
Adjustable foot-operated pedal, AUSCO disc brakes |
| Drive Tires |
26 in × 12 in‑12 in |
| Caster Tires |
13 in × 6.5 in‑6 in, flat-free |
| Seat |
4-point iso-mounted torsion-spring suspension |
| Deck Type |
Velocity Plus, tri-plate steel (≈0.5 in thick at spindles) |
| Cutting Width |
61 in |
| Cutting Height |
1.5 in to 6 in, adjustable in 0.25 in increments |
| Deck Lift |
Adjustable foot-operated pedal |
| Spindles |
Cast-iron housing with tapered roller bearings |
| Length |
85.5 in |
| Width (chute down) |
73.5 in |
| Width (chute transport) |
62.75 in |
| Height (ROPS down) |
46.5 in |
| Height (ROPS up) |
68 in |
| Weight |
1,606 lb |
| Safety & Monitoring |
Tiger Eye Advanced Monitoring System, foldable ROPS |
What our Experts Think
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Commercial-grade zero-turn performance
The Scag Turf Tiger II Commercial Zero Turn Mower – 61in Velocity Plus – 31hp Kawasaki WC DFI (STTII‑61V‑31DFI) delivers professional-level power and smooth, reliable operation for large-area mowing and frequent use. Powered by a liquid-cooled 31 HP Kawasaki FD851D with digital fuel injection, it provides strong performance and efficiency under load.
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Excellent cut quality & deck design
The 61" Velocity Plus cutter deck features tri-plate steel construction and ultra-tough cast-iron spindles with tapered roller bearings—providing even, precise cuts and wide, consistent discharge across every pass.
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Rugged build for long life
Heavy-duty double-tube steel frame, driveshaft-driven deck, and flat-free caster tires enhance durability and stability, even on uneven terrain.
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Comfort & productivity features
Large 26" drive tires, torsion-spring suspension seat, and ergonomic controls help reduce operator fatigue and keep crews productive over long mowing sessions.
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Powerful drive & control
Dual Hydro-Gear pumps and Parker wheel motors provide smooth hydrostatic control with speeds up to ~12 mph forward and ~6 mph reverse, enabling quick, confident maneuvering.
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Smart monitoring & safety
Advanced monitoring system gives real-time insights into critical functions right from the operator’s seat.
Q&A
Q: What type of mower is the Scag Turf Tiger II?
A: It’s a commercial zero-turn mower with a 61-inch Velocity Plus cutting deck and 31 HP Kawasaki WC DFI engine, designed for professional landscapers and large property maintenance.
Q: What engine powers this mower?
A: Equipped with a 31 HP Kawasaki WC DFI (Direct Fuel Injection) engine, providing efficient fuel use, consistent power, and smooth operation under heavy workloads.
Q: How effective is the cutting deck?
A: The 61-inch Velocity Plus deck delivers precise, clean cuts with high-velocity airflow for optimal grass discharge, mulching, and bagging.
Q: How maneuverable is the mower?
A: The zero-turn design offers a tight turning radius, allowing fast navigation around trees, landscaping features, and tight spaces.
Q: What durability features does it have?
A: Built with a commercial-grade steel frame, reinforced deck, and heavy-duty components, ensuring long-lasting performance in demanding environments.
Q: What applications is this mower suited for?
A: Ideal for commercial landscaping, municipal grounds, sports fields, and large residential properties requiring efficient, professional-grade mowing.
Q: Does it include operator comfort features?
A: Yes. Features ergonomic seat, vibration reduction, adjustable deck height, and intuitive controls for comfortable all-day operation.
Q: Why choose the 61-inch Turf Tiger II?
A: The combination of 31 HP Kawasaki power and a 61-inch cutting deck provides high productivity, precise cuts, and reliable performance for professional landscapers.
Maintenance Tips
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Change engine oil & filter regularly: Follow hours‑based intervals (e.g., every 50 hrs); use the recommended grade for Kawasaki DFI.
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Clean/replace air filter: Keeps the Kawasaki engine breathing freely for peak performance.
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Sharpen blades often: Maintain clean, even cuts and reduce turf stress.
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Check tire pressure: Ensures stable deck height and consistent cut quality.
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Remove deck debris: Clean grass buildup from the 61" Velocity Plus deck to prevent rust and improve airflow.
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Inspect belts & pulleys: Check for wear/tension to avoid unexpected downtime.
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Grease spindles & fittings: Lubricate weekly or per service schedule to extend component life.
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Check battery & electrical connections: Keep terminals clean and fully charged for EFI reliability.
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Test safety switches & controls: Ensure all operator safety systems are functioning properly.
Damage 
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