Yamaha YW125Z Owner's Manual page 44

PERIODIC MAINTENANCE AND ADJUSTMENT
TIP
8 Air filter and V-belt filter
9 This model's air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with
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compressed air to avoid damaging it.
9 The air filter element needs to be replaced and V-belt filter needs to be serviced more frequently when riding in
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unusually wet or dusty areas.
8 Hydraulic brake service
9 After disassembling the brake master cylinder and caliper, always change the fluid. Regularly check the brake fluid
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level and fill the reservoir as required.
9 Every two years replace the internal components of the brake master cylinder and caliper, and change the brake
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fluid.
Replace the brake hose every four years and if cracked or damaged.
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EAU1722A
EAUT2710