Contents

INDEX
- GENERAL INFORMATION
  - DESCRIPTION
  - MACHINE IDENTIFICATION
  - IMPORTANT INFORMATION
  - CHECKING OF CONNECTION
  - SPECIAL TOOLS
  - CONTROL FUNCTIONS
  - FUEL AND ENGINE MIXING OIL
  - STARTING AND BREAK-IN
  - TORQUE-CHECK POINTS
  - CLEANING AND STORAGE
- SPECIFICATIONS
  - GENERAL SPECIFICATIONS
  - MAINTENANCE SPECIFICATIONS
  - GENERAL TORQUE SPECIFICATIONS
  - DEFINITION OF UNITS
  - CABLE ROUTING DIAGRAM
- REGULAR INSPECTION AND ADJUSTMENTS
  - MAINTENANCE INTERVALS
  - PRE-OPERATION INSPECTION AND MAINTENANCE
  - ENGINE
  - CHASSIS
  - ELECTRICAL
- ENGINE
  - SEAT, FUEL TANK AND SIDE COVERS
  - EXHAUST PIPE AND SILENCER
  - RADIATOR
  - CARBURETOR AND REED VALVE
  - CYLINDER HEAD, CYLINDER AND PISTON
  - CLUTCH AND PRIMARY DRIVEN GEAR
  - KICK SHAFT, SHIFT SHAFT AND PRIMARY DRIVE GEAR
  - WATER PUMP
  - CDI MAGNETO
  - ENGINE REMOVAL
  - CRANKCASE AND CRANKSHAFT
  - TRANSMISSION, SHIFT CAM AND SHIFT FORK
- CHASSIS
  - FRONT WHEEL AND REAR WHEEL
  - FRONT BRAKE AND REAR BRAKE
  - FRONT FORK
  - HANDLEBAR
  - STEERING
  - SWINGARM
  - REAR SHOCK ABSORBER
- ELECTRICAL
  - ELECTRICAL COMPONENTS AND WIRING DIAGRAM
  - IGNITION SYSTEM
- TUNING
  - ENGINE
  - CHASSIS

Yamaha YZ85V 2005 Owner's Manual

Pages 244

Year 2006

Language(s)

of 244

Yamaha YZ85V 2005 Specification

The Yamaha YZ85V 2005 is a high-performance motocross bike designed for young riders and emerging talents in competitive racing. It features an 84.7cc liquid-cooled, 2-stroke, single-cylinder engine with Yamaha's renowned YPVS (Yamaha Power Valve System) technology, which optimizes power delivery throughout the RPM range, ensuring a strong mid-range and top-end performance. The engine is paired with a 6-speed close-ratio transmission, providing precise gear changes and optimal power management.

The YZ85V's chassis is constructed from a lightweight, high-strength steel frame that offers excellent rigidity and durability. This is complemented by a fully adjustable suspension system, including a 36mm KYB inverted front fork with 275mm of travel and a KYB monocross rear shock with 282mm of travel. These components are designed to handle the rigors of motocross racing, providing exceptional handling, stability, and rider comfort over rough terrain.

The bike is equipped with a large 220mm front disc brake and a 190mm rear disc brake, ensuring reliable stopping power under various conditions. The 17-inch front and 14-inch rear wheels are fitted with knobby tires that offer superior traction on dirt tracks. The ergonomics of the YZ85V include a narrow seat and slim bodywork, allowing for easy maneuverability and control, crucial for competitive racing scenarios.

Weighing approximately 73 kg (161 lbs) wet, the YZ85V strikes a balance between lightweight agility and robust construction. The fuel tank capacity is 5 liters, providing ample range for extended practice sessions or races. Additionally, the bike's aggressive graphics and race-inspired styling underscore its competitive pedigree. Overall, the Yamaha YZ85V 2005 is engineered to deliver exceptional performance, reliability, and control, making it a formidable choice for young motocross enthusiasts.

Yamaha YZ85V 2005 F.A.Q.

What is the recommended spark plug for the Yamaha YZ85V 2005?

The recommended spark plug for the Yamaha YZ85V 2005 is the NGK BR9EG. Ensure the gap is set correctly to 0.7-0.8 mm.

How often should the air filter be cleaned on the Yamaha YZ85V 2005?

The air filter should be checked and cleaned after every ride in dusty conditions or every 3-5 rides under normal conditions. Proper maintenance ensures optimal performance.

What is the correct tire pressure for the Yamaha YZ85V 2005?

The recommended tire pressure for the Yamaha YZ85V 2005 is 12 psi for the front tire and 12 psi for the rear tire. Always check tire pressure before riding.

What type of transmission oil should be used in the Yamaha YZ85V 2005?

Use a high-quality 10W-40 or 10W-30 transmission oil that is specifically designed for 2-stroke engines. Regular oil changes improve gear performance and longevity.

How do I adjust the chain tension on the Yamaha YZ85V 2005?

To adjust the chain tension, loosen the rear axle nut, adjust the tension using the chain adjusters, then tighten the axle nut. Ensure there is 1.2-1.6 inches of slack in the chain.

What is the proper break-in procedure for a new engine on the Yamaha YZ85V 2005?

For a new engine, start with a 10-minute idle, followed by varied throttle for 30 minutes without full throttle. Avoid high RPMs until the first 5 hours of riding are completed.

How can I troubleshoot if the Yamaha YZ85V 2005 won't start?

Check the spark plug for fouling, ensure the fuel is fresh, verify that the kill switch is in the 'run' position, and inspect the carburetor for blockages.

What maintenance should be performed after a muddy ride on the Yamaha YZ85V 2005?

After a muddy ride, thoroughly wash the bike, check and clean the air filter, lubricate the chain, and inspect the brakes for mud and debris.

How do I bleed the brakes on the Yamaha YZ85V 2005?

To bleed the brakes, attach a clear tube to the brake bleeder valve, pump the brake lever, open the valve to release air, close the valve, and repeat until only fluid is expelled.

What should be checked during a routine maintenance of the Yamaha YZ85V 2005?

Routine maintenance should include checking the spark plug, air filter, chain tension, brake function, tire pressure, and transmission oil level. Regular checks ensure reliability and performance.