Honda CBR125R, Owner'S Manual

Page: 167 / 430

COOLING SYSTEM
6-7
REPLACEMENT/AIR BLEEDING
Remove the following:
– Lower cowl (page 2-8)
– Radiator cap (page 6-5)
– Single seat (page 2-4)
Remove the drain bolt on the water pump cover and
drain the system coolant.
Reinstall the drain bolt with a new sealing washer.
Install and tighten the drain bolt securely.
Disconnect the siphon hose from the radiator and
release it to the clamps.
Drain the coolant from the reserve tank.
Empty the coolant and rinse the inside of the
reserve tank with water.
Install the siphon hose to the clamps and connect it
to the radiator.
When filling the
system or reserve
tank with a coolant
(checking coolant
level), support the
motorcycle on a
level surface.
Fill the system with the recommended coolant
through the filler opening up to filler neck.
Bleed air from the system as follows:
1. Shift the transmission into neutral.
Start the engine and let it idle for 2 – 3 minutes.
2. Snap the throttle 3 – 4 times to bleed air from the
system.
3. Stop the engine and add the coolant up to the
filler neck.
4. Install the radiator cap (page 6-5).
DRAIN BOLT/SEALING WASHER
SIPHON HOSE
RESERVE TANK
CLAMPS
FILLER NECK