Page 39 of Kawasaki ATVs by Kawasaki USA

ENGINE Liquid-cooled, DOHC 4-valve, 398 cm 3, 4-stroke Single delivers plenty of torque, especially in the low-to-mid range, and offers highly accessible power throughout a broad powerband. The forward-leaning engine reduces overall engine height, and together with the use of a dry-sump lubrication system, allows the engine to be placed lower in the frame for a lower centre of gravity. TPS-equipped 37mm carburetor for improved engine performance especially at higher RPM. CD ignition delivers precise ignition timing, boosting efficiency while reducing emissions. Durable, lightweight aluminum-alloy cylinder is plated with a nickel-phosphorus silicon carbide coating for increased heat transfer, and a tighter piston-to-cylinder clearance than steel-liner cylinders. Less mechanical losses contribute to a strong, consistent power output. The DOHC design, with separate intake and exhaust camshafts directly pushing the intake and exhaust valves, is distinguished by precise valve operation and less mechanical losses. Shim-under-bucket tappet valvetrain, often seen in high-performance motorcycles, extends periods between maintenance. The aluminum valve retainers weigh only 5 g much lighter than steel retainers. Automatic decompression system helps to start the engine easily. With a simple push of the electric starter button, the decompression system automatically opens one exhaust valve and relieves cylinder compression, allowing easy starting. Forged aluminum piston with short skirts and cutaway sides reduces weight. Use of forged aluminum allows a compact design while maintaining durability and heat resistance. Gear-driven counter-balancer shaft reduces vibration for increased rider comfort. The KFX400 features a manual clutch and a five-speed transmission equipped with a convenient reverse gear. Vacuum-operated fuel valve automatically turns the fuel flow on and off, eliminating the need to shut the fuel off manually. Dry-sump lubrication system helps make the engine more compact, and allows the engine to be placed lower in the frame. As a result, the centre of gravity is about 10 mm lower than it would be with a wet-sump lubrication system. The large air cleaner contributes to the engines smooth, sharp throttle response. For ease of maintenance, the air cleaner is positioned under the seat. CHASSIS The KFX400s vertically stacked large dual 30/30W halogen bulbs multi-reflector headlights use reflectors to distribute light, minimizing light-transmission loss. Both lights are ON at low-beam and at high-beam settings, to offer greater visibility. The KFX comes standard with 5 W multi-reflector taillight and 21 W brake light. Any braking operation, either by foot pedal or hand lever, turns the brake light ON. The electric starting system allows in-gear starting if the clutch is pulled in.

[close]