This comprehensive **Yamaha Raptor 660 YFM660RNC YFM660RN Factory Service Manual** provides detailed instructions for every aspect of your ATV's maintenance and repair. It's the official resource from Yamaha, ensuring accuracy and clarity. This manual is your ultimate guide to keeping your Raptor 660 running smoothly. Inside, you'll find step-by-step instructions covering everything from routine maintenance such as oil changes and filter replacements to more complex procedures like engine rebuilds, transmission overhauls, and electrical system troubleshooting. Detailed diagrams, illustrations, and specifications help you understand each step. You'll also find information on: * **Engine:** Carburation, intake, heads, camshaft, valve train, block, pistons, rings, rods, crankshaft, oil pump, pan, ignition, fasteners, gaskets, bearings, damper, machining, balancing, parts, lifter, distributor, spark plugs, spark plug wires. * **Transmission:** Fluid changes, motor mounts, clips, heat exchanger, plug wires, air seals, timing, muffler, downpipe, cat, catalytic converter, exhaust, headers, heat wrap. * **Fuel System:** Fuel pump, replacement, pushrod, pressure plate, clutch, flywheel, seals, valves, valve stems. * **Wheels and Tires:** Tires, rotation, alignment, timing gear, crank pulley, air deflector, air hose, clutch hose, brake hose. * **Brakes:** Brakes, brake pads, brake shoes, rotor, rotor replacement, clutch lines, head gasket, piston ring, main bearings, cam bearings, timing chain, valve locks, freeze plugs, freon. * **Cooling System:** Radiator, radiator fan, oil radiator, oil cooling, push rods, intake valves, exhaust valves, valve guides, valve springs, piston pin bushings, bushings, ring set, axles, shift linkage, short shifter, shifter cable. * **Electrical System:** Engine harness, wiring harness, wiring diagrams, sensors, oil sensor, pressure sensor, oil pressure sensor, volt meter, air screw, body plug, banjo bolt, body tappet, band nut, cam salai, cam bolt, rotor puller, wrench, rotor bolt, balance spring. * **Carburetor:** Cylinder, gasket, insulator, carburetor, muffler, exhaust gasket, crankcase, pin, crank shaft seal, snap ring, piston ring, piston pin, thrust washer, clutch shoe, clutch case. * **Transfer Case:** Transfercase, transfer case, transfer plate, plug cap, grommet, spacer, recoil assembly, ratchet, carburetor assembly, diaphragm, pump, spring, inlet valve, Welch plug, throttle shaft, choke shaft, choke valve, air filter, air filter replacement, fan cover, filter cover, filter housing, sleeve, choke lever, switch assembly. * **Starting System:** Assembly, recoil starter, starter replacement, battery, battery replacement, fuel pump replacement, fuel pump, fuel filter, fuel filter replacement, fuel pipe, puller assembly. **This manual empowers you to confidently tackle any repair or maintenance job on your Yamaha Raptor 660, saving you time and money.**

The Yamaha Raptor 660, officially known as the YFM660R and YFM660RN, was a powerful and versatile sport ATV that reigned supreme in the off-road world from 2001 to 2005. This machine was a true force to be reckoned with, boasting a 660cc, liquid-cooled, four-stroke, single-cylinder engine that delivered exhilarating performance. Its lightweight chassis and long-travel suspension allowed for exceptional handling and maneuverability, making it a favorite among both recreational riders and competitive racers. The Raptor 660 offered a blend of power and agility that was unmatched in its class. Its powerful engine provided ample torque for climbing hills and accelerating quickly, while its responsive handling made it easy to navigate challenging terrain. The Raptor 660 was also known for its durability and reliability, making it a dependable choice for long days of riding. Equipped with a five-speed manual transmission, the Raptor 660 allowed riders to fully engage with the power delivery and control the machine with precision. Its signature styling featured aggressive lines and a low-slung profile, giving it a sporty appearance that reflected its performance capabilities. The Raptor 660 became a cultural icon in the ATV world, inspiring countless riders and becoming a popular choice for modifications and upgrades. From its powerful engine to its agile handling, the Raptor 660 left an enduring legacy as a true legend in the world of sport ATVs. Its reputation for performance, durability, and exciting riding experience solidified its place as a highly sought-after machine among enthusiasts and collectors. Even today, the Raptor 660 continues to be a popular choice for riders who appreciate its raw power and thrilling performance capabilities.