Yamaha YFM45FGX Grizzly 450 2008 Owner's Manual

Yamaha YFM45FGX Grizzly 450 2008 manual cover

Pages 182

Year 2008

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Yamaha YFM45FGX Grizzly 450 2008 Specification

The Yamaha YFM45FGX Grizzly 450 2008 is a robust all-terrain vehicle designed for both recreational and utility use. It features a 421cc liquid-cooled, SOHC, four-stroke engine that provides reliable power and torque. The engine is mated to a fully automatic Ultramatic transmission with high, low, reverse, and park modes, ensuring seamless operation across diverse terrains.

The Grizzly 450’s chassis is constructed from a durable steel frame, offering stability and resilience. Its independent double-wishbone front suspension with 5-way preload-adjustable shocks and rear swing arm suspension with a single preload-adjustable shock provide a smooth ride and excellent handling. The vehicle is equipped with hydraulic disc brakes on the front and a sealed drum brake on the rear for reliable stopping power.

The YFM45FGX Grizzly 450 also includes On-Command 2WD/4WD with a differential lock, allowing the rider to switch between two-wheel drive and four-wheel drive modes seamlessly. This feature enhances the ATV’s adaptability to various terrains and conditions. The vehicle boasts a ground clearance of 10.8 inches and a towing capacity of 1,322 pounds, making it suitable for hauling and transporting loads.

Ergonomics are well-considered with a comfortable seat and handlebars designed to reduce fatigue during long rides. The Grizzly 450 also comes with a digital meter that displays essential information such as speed, fuel level, and trip distance. Its fuel tank capacity is 3.8 gallons, ensuring extended riding sessions without frequent refueling.

Overall, the Yamaha YFM45FGX Grizzly 450 2008 stands out as a versatile and reliable ATV, combining power, durability, and user-friendly features to cater to both work and recreational needs.

Yamaha YFM45FGX Grizzly 450 2008 F.A.Q.

How often should I change the oil on my Yamaha YFM45FGX Grizzly 450 2008?

It is recommended to change the oil every 100 hours of use or every 6 months, whichever comes first. Regular oil changes ensure optimal engine performance and longevity.

What type of oil is recommended for the Yamaha YFM45FGX Grizzly 450 2008?

Use a high-quality 4-stroke engine oil that is SAE 10W-40 and meets the API service classification of SG or higher. Yamaha recommends their own Yamalube 4, but other brands meeting these specifications are also suitable.

How do I troubleshoot starting issues with my Yamaha YFM45FGX Grizzly 450 2008?

First, check the battery to ensure it is fully charged and the connections are clean and tight. Next, inspect the spark plug for wear or damage, and replace if necessary. Ensure that the fuel supply is adequate and that the fuel filter is not clogged.

What is the recommended tire pressure for the Yamaha YFM45FGX Grizzly 450 2008?

The recommended tire pressure for the front tires is 5.0 psi and for the rear tires is 5.0 psi. Always check the tire pressure when the tires are cold for an accurate reading.

How can I improve the fuel efficiency of my Yamaha YFM45FGX Grizzly 450 2008?

Regular maintenance like keeping the air filter clean, ensuring proper tire pressure, and using the recommended grade of engine oil can help improve fuel efficiency. Additionally, avoid excessive idling and maintain a steady speed when riding.

What should I do if my Yamaha YFM45FGX Grizzly 450 2008 overheats?

If the ATV overheats, stop the engine immediately and allow it to cool down. Check the coolant level and ensure there are no leaks. Inspect the radiator for obstructions and clean if necessary. If the problem persists, consult a professional mechanic.

How do I adjust the brakes on my Yamaha YFM45FGX Grizzly 450 2008?

To adjust the brakes, locate the brake adjustment screw near the brake lever or pedal. Turn the screw clockwise to tighten the brakes or counterclockwise to loosen them. Test the brakes after adjustment to ensure proper function.

What is the proper way to store my Yamaha YFM45FGX Grizzly 450 2008 during the off-season?

Clean the ATV thoroughly and apply a protective coating to metal parts. Drain the fuel system or add a fuel stabilizer. Disconnect the battery and store it in a cool, dry place. Inflate the tires to the recommended pressure and cover the ATV to protect it from dust and moisture.

How do I check and replace the air filter on my Yamaha YFM45FGX Grizzly 450 2008?

Locate the air filter housing and remove the cover. Take out the air filter and inspect it for dirt and damage. If it is dirty or damaged, replace it with a new one. Reinstall the filter and secure the housing cover.

What should I do if the transmission on my Yamaha YFM45FGX Grizzly 450 2008 is not shifting smoothly?

Check the transmission fluid level and top off if necessary. Ensure that the shift linkage is properly adjusted and lubricated. If the issue persists, inspect for worn or damaged components and consider consulting a professional mechanic for further diagnosis.