Yamaha YFM450DE, YFM450DAE, YFM450PE, YFM450PHE Grizzly 450 2014 Manual
![Yamaha YFM450DE, YFM450DAE, YFM450PE, YFM450PHE Grizzly 450 2014 manual cover](/images/4b0ce997b0067b58e6d53446/thumbs/thumb175x175.webp)
The recommended oil type for the Yamaha Grizzly 450 2014 models is 10W-40 4-stroke motor oil, specifically designed for ATV engines.
It is recommended to change the oil every 3,200 kilometers (approximately 2,000 miles) or every 6 months, whichever comes first. Regular oil changes ensure optimal performance and longevity of the engine.
If your Grizzly 450 is having starting issues, check the battery for charge, ensure the fuel valve is open, inspect the spark plug for wear, and make sure the engine stop switch is in the 'run' position.
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.
The air filter should be checked and cleaned every 1,600 kilometers (approximately 1,000 miles) or more frequently if you ride in dusty conditions. Replace the filter if it is damaged or excessively dirty.
Use a high-quality ethylene glycol antifreeze containing corrosion inhibitors specifically formulated for aluminum engines. Ensure it's mixed with distilled water in a 1:1 ratio.
To adjust the idle speed, locate the idle adjustment screw on the carburetor. Turn it clockwise to increase the idle speed or counterclockwise to decrease it. The recommended idle speed is 1,450-1,550 RPM.
If your Grizzly 450 overheats, stop the engine immediately and let it cool down. Check the coolant level and ensure the radiator fins are not obstructed. Avoid operating in high ambient temperatures for extended periods.
To replace the spark plug, remove the spark plug cap, use a spark plug wrench to unscrew the old plug, and then install the new plug by hand to avoid cross-threading. Tighten with a wrench and reattach the spark plug cap.
Regular maintenance intervals include checking the air filter and tire pressure every 1,600 kilometers (1,000 miles), changing the oil every 3,200 kilometers (2,000 miles), and inspecting the brakes and throttle system every 6 months.