2
WARNING
• The calipers and rotor will become hot when
the brakes are operated, so do not touch them
while riding or immediately after dismounting
from the bicycle, otherwise you may get
burned. Check that the brake components have
cooled down sufficiently before attempting to
adjust the brakes.
• The required braking distance will be longer
during wet weather.
Reduce your speed and apply the brakes early
and gently.
• If the road surface is wet, the tires will skid
more easily. If the tires skid, you may fall off
the bicycle. To avoid this, reduce your speed
and apply the brakes early and gently.
• Always make sure that the front and rear
brakes are working correctly before you ride
the bicycle.
• Be careful not to allow any oil or grease to get
onto the rotor and brake pads, otherwise the
brakes may not work correctly.
• If any oil or grease do get on the pads, you
should replace the pads. If any oil or grease
gets on the rotor, you should clean the rotor. If
this is not done, the brakes may not work
correctly.
• Use only genuine Shimano mineral oil. If other
types of oil are used, it may cause problems
with brake operation, and cause the system to
be unuseable.
• Be sure to use only oil from a freshly-opened
container, and do not re-use oil which has been
drained from the bleed nipple. Old oil or
already-used oil may contain water which could
cause vapor lock in the brake system.
• Be careful not to let water or air bubbles to get
into the brake system, otherwise vapor lock
may occur. Be particularly careful when
removing the cover of the reservoir tank.
• Vapor lock may occur if the brakes are applied
continuously. To relieve this condition,
momentarily release the lever.
• If fluid leaks occur, immediately stop using the
brakes and carry out the appropriate repairs. If
you continue riding the bicycle while fluid is
leaking, there is the danger that the brakes
may suddenly stop working.
• Check that the quick release lever is on the
right side (the opposite side to the rotor). If the
quick release lever is on the same side as the
rotor, there is the danger that it may interfere
with the rotor, so check that it does not
interfere.
• It is important to completely understand the
operation of your bicycle's brake system.
Improper use of your bicycle's brake system may
result in a loss of control or an accident, which
could lead to severe injury. Because each bicycle
may handle differently, be sure to learn the
proper braking technique (including brake lever
pressure and bicycle control characteristics) and
operation of your bicycle. This can be done by
consulting your professional bicycle dealer and
the bicycle's owners manual, and by practicing
your riding and braking technique.
• Obtain, read and carefully service instructions
when installing parts. A loose, worn, or
damaged parts may cause injury to the rider.
We strongly recommend that only genuine
Shimano replacement parts be used.
• Read these Technical Service Instructions
carefully, and keep them in a safe place for
later reference.
■Handling the mineral oil
• Use safety glasses when handling, and avoid
contact with eyes. Contact with eyes may result
in irritation.
• Use gloves when handling. Contact with skin
may cause a rash and discomfort.
• Inhalation of oil mist or vapors may cause
nausea. Cover nose and mouth with a respirator
type mask and use in a well ventilated area.
• Do not drink. May cause vomiting or diarrhea.
• Keep out of reach of children.
• Do not cut, heat, weld or pressurize the oil
container, as this may cause explosion or fire.
■Emergency Care
• In the event of eye contact, flush with fresh
water and seek medical assistance immediately.
• In the event of skin contact, wash well with
soap and water.
• If mist or vapor is inhaled, go immediately to
an area with fresh air. Cover up with a blanket.
Stay warm and stable and seek professional
medical advice.
■Disposal of Used Oil
• Follow local county and/or state codes for
disposal. Use care when preparing oil for
disposal.
■Directions
• Keep the container sealed to prevent foreign
objects and moisture from getting inside, and
store it in a cool, dark area away from direct
sunlight or heat.
General Safety Information
Vapor lock is a phenomenon in which the oil
inside the brake system becomes heated,
which causes any water or air bubbles inside
the brake system to expand. This can then
result in a sudden increase in the brake lever
stroke.
CAUTION
Hydraulic
Disc Brake
