Kawasaki KAI Single FJ180V-(D)M09-S 4.5 HP Engine

Kawasaki KAI Single FJ180V-(D)M09-S 4.5 HP Engine

From lawn care to industrial labor, the FJ180 KAI dials up the power to meet a wide range of demands. Designed to help keep emissions low and productivity high, this forced-air-cooled 4-cycle Kawasaki engine features pressurized lubrication, an internally vented carburetor, dual element air cleaner, and a ball-bearing-supported crankshaft.

Each image of the engine represents the series itself and not the individual engine.

Features:

• Engine performance, by the numbers: From power and torque numbers to engine features and more, the following is here to help communicate engine performance details and capabilities. Be sure to consider these specs to help ensure the engine you’re choosing is a match to your mowing needs.

• Vertical PTO Shaft: A downward-oriented Power Take-Off shaft designed for direct connection to mower blades or drive pulleys, optimized for vertical-mount equipment.

• Cast Iron Cylinder Liner: A high-strength iron sleeve within the aluminum block that provides a rugged, wear-resistant surface for the piston, significantly extending the engine's service life.

• Overhead Valves (OHV): An advanced valvetrain layout that improves airflow and combustion efficiency, resulting in higher power output, cooler operation, and lower fuel consumption.

• Flywheel Magneto Transistor Type Ignition System: A dependable, solid-state ignition setup that uses the flywheel's rotation to generate a high-voltage spark without the need for moving contact points, ensuring maintenance-free operation.

• Full Pressure Lubrication System: An automotive-grade system that uses a mechanical pump to force oil to critical engine bearings, allowing for safe operation on steep hills and uneven terrain where splash systems fail.

• Spin-on Oil Filter (Optional): An available upgrade that allows for a high-efficiency external filter, making oil changes cleaner and providing superior protection against microscopic contaminants.

• Dual Element Cylindrical Air Cleaner: A professional two-stage filtration system utilizing a foam pre-filter and a high-capacity cylindrical paper element to keep the engine breathing clean air in dusty environments.

• Ball Bearing Crankshaft Top Support: A premium support system using heavy-duty ball bearings to reduce internal friction and better handle the vertical loads and vibrations of a spinning mower blade.

• Recoil Type Starter: A rugged, manual pull-start mechanism designed for durability and consistent engagement over thousands of starting cycles.

• 65 mm Cylinder Bore / 54 mm Piston Stroke: Precision-engineered dimensions that define the 179cc displacement, balanced specifically to produce high torque at the lower RPM ranges needed for thick grass.

• 8.5:1 Compression Ratio: A calibrated compression setting that maximizes thermal efficiency and power delivery while allowing the engine to run safely on standard 87-octane pump gasoline.

• 2,400 RPM of Torque: Specifically tuned to reach its peak pulling power at a lower 2,400 RPM, ensuring the engine won't "bog down" when encountering dense or wet turf.

• Low-Tone Muffler with Guard: A heavy-duty exhaust system engineered to produce a deeper, quieter sound profile, protected by a metal heat shield for operator safety.

• Automatic Compression Release (ACR): A mechanical system that slightly vents the cylinder during the start-up stroke, drastically reducing the physical effort needed to pull the starter cord.

• Mechanical Governor: A sensitive, gear-driven speed control system that instantly adjusts the throttle to maintain consistent blade speed when the engine encounters varying grass loads.

• Pulse Fuel Pump: A vacuum-actuated pump that ensures a steady, pressurized fuel supply to the carburetor, regardless of the fuel level in the tank or the angle of the mower.

• Internally Vented Carburetor: A smart induction design that keeps the air-fuel ratio consistent even as the air filter gets dirty, preventing power loss and excessive fuel use during the workday.

• Electronic Spark Ignition System: A high-reliability ignition module that provides a precise, hot spark for "first-pull" starting and smooth running across the entire power band.

• Dual Cable Controls: A professional interface allowing for independent control of both the engine throttle and the choke (or blade brake), providing the operator with more precise machine management.

• Heavy-Duty: A designation reflecting the use of reinforced components throughout the engine, built specifically to survive the rigors of commercial landscaping.

• Serviceable-Recoil Assembly: An easy-access starter housing designed for quick maintenance, allowing the pull-rope or spring to be replaced without disassembling the entire engine shroud.