3. INSPECTION/ADJUSTMENT VITALITY 50 2.Remove the air cleaner (1). 3. Clean the air cleaner element with compressed air. 4. Replace the air cleaner element at very 4000km. 5. For installation, reverse the removal procedures. Never use oil or solvent to wash the wet type paper element. Be careful not to allow water to enter the air cleaner; otherwise it may result in hard starting. If the air cleaner is not installed properly, dust may be sucked into the cylinder directly to reduce engine horsepower and affect the engine life. 3-12