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General| Displacement | 449cc |
|---|---|
| Bore x Stroke | 97.0mm x 60.8mm |
| Transmission | 5-speed |
| Final Drive | Chain |
| Fuel Capacity | 1.6 gal |
| Fuel Delivery | Fuel Injection |
| Ignition | TCI |
| Front Suspension | KYB® spring-type fork with speed-sensitive damping; fully adjustable, 12.2-in travel |
| Rear Suspension | KYB® Single shock; fully adjustable |
| Front Brake | Hydraulic disc, 270mm |
| Rear Brake | Hydraulic single disc brake |
| Wet Weight | 245 lbs |
| Tire Front | 80/100-21 |
| Tire Rear | 120/80-19 |
| Engine Type | Liquid-cooled, DOHC, 4-stroke, single-cylinder |
Identifies various parts of the Yamaha YZ450F motorcycle.
Explains the importance and location of vehicle and engine serial numbers.
Lists and describes the essential tools and parts included with the motorcycle.
Provides crucial notes on preparation for disassembly and handling.
Details specific tools required for maintenance and their usage.
Describes the operation of key controls like the engine stop switch and throttle grip.
Guides on starting the engine and the essential break-in process.
Lists critical fasteners requiring torque checks for safety and performance.
Provides instructions for proper cleaning and long-term storage of the motorcycle.
Lists overall dimensions, weight, engine, fuel, and chassis specifications.
Provides standard and limit values for engine and chassis components.
Specifies torque values for engine, chassis, and electrical fasteners.
Defines torque units and general torque values for standard fasteners.
Illustrates oil flow paths within the engine and key lubrication points.
Shows the correct routing and placement of various cables and hoses.
Outlines the recommended maintenance schedule for engine and chassis parts.
Lists checks to ensure the machine is in good condition before riding.
Covers procedures for checking and maintaining engine cooling, oil, and controls.
Details inspection and adjustment procedures for brakes, wheels, and suspension.
Explains how to inspect and check the spark plug and ignition timing.
Procedures for removing and installing the seat, fuel tank, and side covers.
Instructions for removing, checking, and installing the exhaust system components.
Details on removing, checking, and installing the radiator and related hoses.
Covers removal, disassembly, inspection, and assembly of the carburetor.
Provides steps for removing, checking, and installing camshafts and related parts.
Instructions for removing, inspecting, and installing the cylinder head and gasket.
Details on removing, checking, lapping, and installing valves and springs.
Procedures for removing, checking, and installing the cylinder and piston assembly.
Covers removal, inspection, and installation of clutch components.
Instructions for servicing the oil filter and water pump assembly.
Details on removing, checking, and installing the engine balancer assembly.
Covers removal, inspection, and installation of the oil pump.
Procedures for removing, checking, and installing kick and shift shaft mechanisms.
Instructions for removing, checking, and installing the CDI magneto and stator.
Step-by-step guide for removing and reinstalling the engine from the chassis.
Details on separating crankcases and servicing crankshaft and bearings.
Procedures for removing, checking, and installing transmission components.
Instructions for removing, installing, and checking front and rear wheels and bearings.
Covers removal, disassembly, and installation of brake calipers and master cylinders.
Detailed procedures for disassembling, assembling, and adjusting front forks.
Instructions for removing, installing, and adjusting the handlebar and its controls.
Guides on removing, inspecting, and adjusting the steering head assembly.
Procedures for removing, disassembling, and installing the swingarm and linkages.
Covers removal, inspection, and installation of the rear shock absorber.
Identifies electrical components and provides the system's wiring diagram.
Details steps for diagnosing and troubleshooting ignition system failures.
Explains inspection and adjustment procedures for the throttle position sensor.
Guides on adjusting carburetor settings for optimal engine performance.
Provides guidance on tuning suspension, tire pressure, and gear ratios.
