Yamaha YZ125Z 2010 Owner's Manual

Yamaha YZ125Z 2010 manual cover
Pages 234
Year 2010
Language(s)
English en

Yamaha YZ125Z 2010 Specification

The Yamaha YZ125Z 2010 is a high-performance motocross motorcycle designed for competitive racing. At the heart of the YZ125Z is a 124cc, liquid-cooled, 2-stroke engine equipped with Yamaha's Power Valve System (YPVS) that optimizes both low-end torque and high-end power, delivering an exhilarating ride across various terrains. The engine is paired with a six-speed transmission, providing smooth and precise shifting for enhanced control and performance.

The chassis of the YZ125Z features a lightweight aluminum frame that ensures durability while keeping the weight to a minimum, contributing to the bike's agility and maneuverability. The suspension system consists of fully adjustable KYB inverted front forks and a rear monoshock, both offering exceptional responsiveness and stability over rough tracks. The braking system is equipped with wave-style rotors, providing superior stopping power and improved heat dissipation.

Ergonomically, the YZ125Z is designed with a slim and compact profile, allowing for better rider movement and control. The seat and handlebar position have been optimized for comfort during long rides and aggressive maneuvers. The bike also features a large-capacity radiator and a high-flow air filter to ensure optimal engine cooling and performance in demanding conditions.

The Yamaha YZ125Z 2010 comes with a stylish and functional design, featuring race-inspired graphics and a durable plastic body that can withstand the rigors of off-road racing. The bike’s lightweight design, combined with its powerful engine and advanced suspension, makes it an ideal choice for both amateur and professional motocross riders seeking a competitive edge.

Yamaha YZ125Z 2010 F.A.Q.

What is the recommended oil ratio for mixing fuel in the Yamaha YZ125Z 2010?

The recommended oil ratio for the Yamaha YZ125Z 2010 is 32:1. This means mixing 32 parts of gasoline with 1 part of 2-stroke engine oil.

How often should I clean the air filter on my Yamaha YZ125Z 2010?

You should clean the air filter after every 2-3 rides, or more frequently if you are riding in dusty conditions.

What spark plug type is recommended for the Yamaha YZ125Z 2010?

The recommended spark plug for the Yamaha YZ125Z 2010 is an NGK BR9EG.

How do I properly adjust the chain tension on my Yamaha YZ125Z 2010?

To adjust the chain tension, ensure there is about 1.2 inches (30 mm) of slack at the tightest point of the chain when measured from the swingarm. Loosen the axle nut and adjust the chain adjusters equally on both sides.

What is the correct tire pressure for the Yamaha YZ125Z 2010?

The recommended tire pressure for the Yamaha YZ125Z 2010 is 12 psi for both front and rear tires.

How can I troubleshoot a non-starting Yamaha YZ125Z 2010?

Check the fuel level, inspect the spark plug for fouling, ensure the kill switch is in the 'run' position, and verify that the fuel petcock is turned on.

What routine maintenance should be performed on the Yamaha YZ125Z 2010 after each ride?

After each ride, clean the bike thoroughly, check for any loose bolts, inspect the chain and sprockets, and lubricate the chain. Also, check the air filter and clean it if necessary.

How often should I replace the fork oil on my Yamaha YZ125Z 2010?

It is recommended to replace the fork oil every 20-30 hours of riding, or at least once a year.

What should I do if my Yamaha YZ125Z 2010 is overheating?

Ensure the radiator is filled with coolant, check for any obstructions in the radiator fins, and make sure the engine is not running too lean. Consider checking the coolant system for leaks.

How do I adjust the carburetor on the Yamaha YZ125Z 2010 for optimal performance?

To adjust the carburetor, start with the air screw and needle clip in the stock position, then fine-tune the air screw for smooth idle and throttle response. You may need to adjust the main jet and needle position based on altitude and temperature.