Yamaha YFM250XR Bear Tracker 2003 Owner's Manual
![Yamaha YFM250XR Bear Tracker 2003 manual cover](/images/01b5f6da18af0e6853594b73/thumbs/thumb175x175.webp)
To change the oil, warm up the engine, remove the drain plug under the engine, and let the oil drain completely. Replace the drain plug, remove the oil filter, replace it with a new one, and refill the engine with the recommended oil type and quantity.
The recommended tire pressure for the front tires is 5 psi and for the rear tires is 5 psi. Always check the tire pressure when the tires are cold.
Check the battery charge and connections, inspect the spark plug for wear or fouling, ensure the fuel is fresh, and verify that the kill switch is in the 'Run' position.
Regular maintenance includes checking and changing the oil, inspecting and cleaning the air filter, checking tire pressure, tightening bolts and nuts, and lubricating cables and pivots.
Loosen the rear axle nut, adjust the chain tensioner bolts evenly on both sides until the desired tension is reached, and retighten the axle nut. Ensure there is about 1 inch of slack in the chain.
The recommended spark plug is NGK DR8EA. Ensure the gap is set to 0.6-0.7 mm before installation.
Locate the brake fluid reservoir on the handlebar. Ensure the fluid level is between the minimum and maximum marks. Use DOT 4 brake fluid if needed.
To improve fuel efficiency, keep the engine tuned, regularly clean or replace the air filter, ensure proper tire inflation, and avoid excessive idling.
If overheating occurs, stop the engine and let it cool down. Check the coolant level, inspect the radiator for obstructions, and ensure the fan is working properly.
To replace the air filter, remove the seat and the airbox cover. Take out the old air filter, install the new filter, and reattach the airbox cover and seat.