Yamaha MIO AL115S Owner's Manual page 42

PERIODIC MAINTENANCE AND ADJUSTMENT
TIP
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The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
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Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years replace the internal components of the brake master cylinder and caliper, and change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
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