Yamaha YZ250X 2022 Owner's Service Manual

ENGINE3-97. Apply:• Lithium-soap-based grease(on the matching surface “a” on air filter ele-ment)8. Install:• Air filter element “1”• Washer• Fitting boltTIPAlign the projection “a” on filter guide with thehole “b” in air filter case.NOTICEECA26420Make sure that the air filter element is prop-erly seated in the air filter case. The engineshould never be operated without the air fil-ter element installed, otherwise the piston(s)and/or cylinder(s) may become excessivelyworn.EAM30541CHECKING THE CARBURETOR JOINT1. Check:• Carburetor joint “1”Cracks/damage  Replace.EAM30542CHECKING THE CARBURETOR HOSESThe following procedure applies to all of the fueland vacuum hoses.1. Check:• Fuel hose• Carburetor breather hose “1”• Overflow hose “2”Cracks/damage  Replace.Loose connection  Connect properly.EAM30221CHECKING THE EXHAUST SYSTEM1. Remove:• Exhaust pipe• SilencerRefer to “ENGINE REMOVAL” on page 5-1.2. Check:• Exhaust pipe• SilencerCrack/damage  Replace.Refer to “ENGINE REMOVAL” on page 5-1.3. Check:• Silencer fiberDamage  Replace.4. Replace:• Silencer fiberFitting bolt2.0 N·m (0.20 kgf·m, 1.5 lb·ft)aT R..1121