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20 Shaft New (2026) Yamaha 9.9 HP Tiller (T9.9) four-stroke Outboard Motor High Thrust (T9.9LWHB) Start Electric Tilt Manual

Original price was: $1,748.00.Current price is: $1,449.00.

High Thrust Features
  • Dual Thrust™ Propeller: Specifically engineered to redirect exhaust away from the blades when in reverse, providing incredible “bite” and stopping power for heavy boats.
  • High Gear Ratio (2.92:1): A larger gear case and lower gear ratio allow the engine to turn a much larger propeller, generating the extra thrust needed to move heavy loads efficiently.
  • High-Torque 212cc Engine: The twin-cylinder SOHC design provides the smooth, consistent low-end torque required for heavy-duty displacement hulls.
Core Engine Specifications
  • Engine Type: SOHC In-line 2-Cylinder
  • Displacement: 212 cc (12.9 cu. in.)
  • Bore x Stroke: 56.0 x 43.0 mm (2.20 x 1.69 in)
  • Prop Shaft Horsepower: 9.9 HP at 5500 RPM
  • Full Throttle RPM Range: 5000 – 6000 RPM
  • Compression Ratio: 9.4:1
  • Fuel Induction System: Single Carburetor
  • Ignition System: CDI Microcomputer
  • Lubrication System: Wet Sump
  • Oil Capacity: 0.8L (approx. 0.85 qt)
Dimensions & Mechanical Data
  • Shaft Length: 20″ (Long Shaft)
  • Dry Weight: Approximately 46 kg (102 lbs)
  • Starting System: Electric Start (with Manual Rope Start backup)
  • Steering: Tiller Handle
  • Trim & Tilt: Manual Tilt (5 positions)
    • Tilt Range: 71°
    • Trim Range: -4° through +16°
  • Gear Ratio: 2.92:1 (High Thrust ratio for increased torque)
  • Gear Shift: Forward, Neutral, Reverse (F-N-R)
  • Alternator Output: 12V, 6 Amp
High Thrust (T-Series) Performance Features
  • Dual Thrust™ Propeller: Redirects exhaust away from blades in reverse for superior grip and stopping power.
  • Oversized Gearcase: Houses heavy-duty gears and supports a larger diameter propeller to move heavy hulls.
  • Freshwater Flush Device: Easy-access port to rinse the cooling system without running the motor.
  • Auto-Decompression: Simplifies manual starting by reducing pull-force on the rope backup.
  • Labyrinth Exhaust: Significantly reduces engine noise at low speeds.
Fuel & Maintenance
  • Recommended Fuel: Regular Unleaded (Minimum 87 Octane)
  • Recommended Oil: Yamalube® 4M (10W-30)
  • Spark Plug: NGK® BR6HS-10
  • Warranty: 3-year limited warranty
  • ⚡ Starting & Power Features
    • Electric Start: Offers effortless push-button starting. It also retains a permanent manual pull-start handle as a reliable backup.
    • 6-Amp Alternator: A built-in charging system that keeps your battery topped up while running—crucial for powering navigation lights or electronics.
    • PrimeStart™: An “auto-choke” system that ensures a quick and easy start on the first try in both cold and warm climates.
    🕹️ Control & Maneuverability
    • Multi-Function Tiller Handle: Features an ergonomic design with a front-mounted shift lever (Forward-Neutral-Reverse) for easy reach, a large twist-grip throttle, and a stop switch.
    • Manual Tilt with Shallow Water Drive: A simple, lever-actuated tilt mechanism with multiple preset positions to protect the propeller when navigating thin water.
    • Auto-Decompression: Reduces cylinder pressure during the start cycle, making it easier on the electric starter motor and manual rope.
    🛡️ Durability & Maintenance
    • Freshwater Flush Device: A front-mounted, easy-access port that lets you rinse salt and debris out of the cooling system with a garden hose without running the motor.
    • YDC-30 Aluminum Alloy: Yamaha’s proprietary anti-corrosive alloy, finished with a 5-stage paint process for maximum saltwater protection.
    • Thermostatic Cooling: Maintains optimal engine temperature for consistent performance and long-term engine health.
    📦 Standard Equipment
    • Weight: Approximately 46 kg (102 lbs).
    • External Fuel Tank: Typically supplied with a 12L (3.1-gallon) tank and fuel line.
    • Propeller: Specialized High-Thrust 3-blade aluminum propeller

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