Kawasaki KAI Single FJ180V-(C)M12-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 number: 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-facing power take-off shaft designed for seamless integration with mower blades and drive pulleys, providing direct power for vertical-mount applications.
-
Cast Iron Cylinder Liner: A rugged, wear-resistant iron sleeve that reinforces the cylinder block, ensuring long-term durability and consistent compression over thousands of hours of use.
-
Overhead Valves (OHV): A high-efficiency valvetrain design that optimizes airflow and combustion, leading to higher power output, better fuel economy, and cooler engine temperatures.
-
Flywheel Magneto Transistor Type Ignition System: A dependable, solid-state ignition system that generates a powerful spark without moving contact points, ensuring maintenance-free and reliable engine timing.
-
Full Pressure Lubrication System: An industrial-grade system utilizing a mechanical oil pump to force lubrication to critical bearings, allowing for safe, continuous operation on steep slopes and hills.
-
Spin-on Oil Filter (Optional): Allows for the addition of an external, automotive-style oil filter to provide superior filtration of microscopic contaminants and simplify oil maintenance.
-
Dual Element Cylindrical Air Cleaner: A heavy-duty, two-stage filtration system featuring a foam pre-filter and a high-capacity cylindrical paper element to shield the engine from abrasive dust.
-
Ball Bearing Crankshaft Top Support: High-quality ball bearings support the crankshaft to reduce internal friction and better manage the heavy side-loads and vibrations of a spinning mower blade.
-
Recoil Type Starter: A durable, manual pull-start mechanism engineered for consistent engagement and a long service life in demanding commercial environments.
-
65 mm Cylinder Bore / 54 mm Piston Stroke: Precision internal dimensions that define the engine's 179cc displacement, balanced perfectly to deliver high torque and smooth power delivery.
-
8.5:1 Compression Ratio: An optimized compression setting that balances high thermal efficiency with the ability to run reliably on standard 87-octane pump gasoline.
-
2,400 RPM of Torque: Specifically tuned to reach its peak torque at a lower RPM, ensuring the engine has the "grunt" needed to power through thick, heavy grass without stalling.
-
Low-Tone Muffler with Guard: A specialized exhaust system designed to minimize noise pollution while a metal heat shield protects the operator from accidental contact.
-
Automatic Compression Release (ACR): A mechanical system that reduces the effort needed to pull the starter cord by more than 40%, ensuring easy, one-pull starting every time.
-
Mechanical Governor: A gear-driven speed control system that senses changes in load and instantly adjusts the throttle to maintain constant blade speed in varying grass conditions.
-
Pulse Fuel Pump: A vacuum-driven pump that ensures a steady, reliable fuel supply to the carburetor regardless of the fuel tank's position or the angle of the terrain.
-
Internally Vented Carburetor: A smart induction design that maintains the correct air-fuel mixture even as the air filter becomes dirty, preventing power loss and fuel waste.
-
Electronic Spark Ignition System: Provides a consistent, high-energy spark for reliable ignition across all operating speeds and ensures quick starts in cold weather.
-
Dual Cable Controls: Professional-grade interface allowing for independent, precise control over both the throttle and the choke (or blade brake) systems.
-
Heavy-Duty Construction: A design philosophy utilizing reinforced components and premium materials to survive the daily abuse of commercial job sites.
-
Serviceable-Recoil Assembly: An easy-access starter housing designed for field maintenance, allowing the operator to replace a pull-rope or spring without complex engine teardowns.
