BYD F3/F3R Owner's Manual page 186

F3/F3R OWNER'S MANUAL
Maintenance should also be carried out in
accordance with the schedule if it fails to
meet the deadline.
The service interval of each item can be
recorded in the maintenance schedule.
Rubber hoses (from cooling and heater
system, brake system and fuel system)
should be inspected by a qualified
technician in accordance with the BYD F3/F3R
maintenance schedule.
These are particularly important maintenance
items. Have any deteriorated or damaged
hoses replaced will deteriorate with age,
resulting in swelling, chafing, or cracks.
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