Suzuki Burgman 400 - Service manual > Cooling System

Cooling System Inspection

Engine Coolant Level Inspection

Inspect cooling system
Every 6 000 km (4 000 miles, 12 months)

Replace engine coolant
Every 2 years

1) Keep the motorcycle upright with the center stand.

2) Open the fuel lid.

3) Check the engine coolant level by observing the full and lower lines on the engine coolant reservoir tank.

If the level is below the lower line, add engine coolant to the full line from the engine coolant reservoir tank filler.

Engine Coolant Change

1) Remove the front panel. Refer to "Front Panel Removal and Installation".

2) Remove the under cover. Refer to "Under Cover Removal and Installation".

! 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.

3) Remove the radiator cap (1).

4) Drain engine coolant by disconnecting the radiator outlet hose (2).

5) Flush the radiator with fresh water if necessary.

6) Reconnect the radiator outlet hose.

7) Pour the specified engine coolant up to the radiator inlet.

8) Bleed air from the cooling circuit.

Air Bleeding From the Cooling Circuit

Bleed air from the cooling circuit in the following procedures:

1) Remove the front panel. Refer to "Front Panel Removal and Installation".

2) Remove the left footboard. Refer to "Footboard Removal and Installation".

3) Support the motorcycle upright.

4) Pour engine coolant up to the radiator inlet.

5) Slowly swing the motorcycle, right and left, to bleed the air trapped in the cooling circuit.

6) Add engine coolant up to the radiator inlet.

7) Start up the engine and bleed air from the radiator inlet completely.

8) Add engine coolant up to the radiator inlet.

9) Repeat the above procedures until no air bleeds from the radiator inlet.

10) Loosen the air bleeding bolt (1) and check that the engine coolant flows out.

11) Close the air bleeding bolt securely.

12) Close the radiator cap securely.

13) After warming up and cooling down the engine several times, add the engine coolant up to the full level of the reservoir.

14) Install the removed parts.

! CAUTION Repeat the above procedures several times and make sure that the radiator is filled with engine coolant up to the reservoir full level.

LLC: Engine coolant capacity
Engine side: 1 600 ml (1.7/1.4 US/lmp pt)
Reservoir tank side: 250 ml (0.3/0.2 US/lmp qt)

Radiator Hose Inspection

Inspect the radiator hoses in the following procedures:

1) Remove the left footboard. Refer to "Footboard Removal and Installation".

2) Check the radiator hoses for crack, damage or engine coolant leakage. If any defect is found, replace the radiator hose with a new one.

3) Install the left footboard. Refer to "Footboard Removal and Installation".

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