Suzuki GSX-R750 Service Manual page 43

Engine Coolant Change
Refer to "Engine Coolant Description in Section 1F
(Page 1F-1)".
WARNING
!
Do not open the radiator cap when the engine
is hot, as you may be injured by escaping hot
liquid or vapor. Engine coolant may be
harmful if swallowed or if it comes in contact
with skin or eyes. If engine coolant gets into
the eyes or in contact with the skin, flush
thoroughly with plenty of water. If swallowed,
induce vomiting and call physician
immediately.
1) Remove the under cowlings. Refer to "Exterior Parts
Removal and Installation in Section 9D (Page 9D-
11)".
2) Remove the radiator cap (1).
3) Drain engine coolant by disconnecting the water
pump inlet hose (2) and outlet hose (3).
2
3
4) Flush the radiator with fresh water if necessary.
5) Reconnect the water pump inlet hose.
6) Pour the specified engine coolant up to the radiator
inlet.
Engine coolant capacity (excluding reservoir)
2 650 ml (2.8/2.3 US/lmp qt)
7) Bleed air from the cooling circuit.
8) After changing engine coolant, reinstall the removed
parts.
1
I837H1020026-01
I837H1020027-02
Maintenance and Lubrication:
Air Bleeding From the Cooling Circuit
1) Remove the right under cowling. Refer to "Exterior
Parts Removal and Installation in Section 9D
(Page 9D-11)".
2) Add engine coolant up to the radiator inlet.
3) Support the motorcycle upright.
4) Slowly swing the motorcycle, right and left, to bleed
the air trapped in the cooling circuit.
5) Add engine coolant up to the radiator inlet.
6) Start up the engine and bleed air from the radiator
inlet completely.
7) Add engine coolant up to the radiator inlet.
8) Repeat the procedures 5) to 6) until no air bleeds
from the radiator inlet.
9) Loosen the air bleeder bolt (1) and check the engine
coolant flows out.
10) Tighten the air bleeder bolt securely.
11) Close the radiator cap securely.
12) After warming up and cooling down the engine
several times, add the engine coolant up to the full
level of the reservoir.
CAUTION
!
Make sure that the radiator is filled with
engine coolant up to the reservoir full level.
13) Reinstall the removed parts.
Radiator Hose Inspection
Check the radiator hoses for crack, damage or engine
coolant leakage. Refer to "Water Hose Inspection in
Section 1F (Page 1F-6)".
0B-13
1
I837H1020028-02