Yamaha YFM4FGW Owner's Manual page 96

EBU23070
NOTE:
G The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
G
Hydraulic brake service
• Regularly check and, if necessary, correct the brake fluid level.
• Every two years replace the internal components of the brake master cylinders and calipers, and
change the brake fluid.
• Replace the brake hoses every four years and if cracked or damaged.
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