When cleaning the radiator with steam cleaner, be careful of the following to prevent radiator damage

1) Keep the steam gun [A] away more than 0.5 m (20 in.) [B] from the radiator core.

2) Hold the steam gun perpendicular to the core sur­face.

3) Run the steam gun horizontally following the core fin direction. Running it vertically may damage the fin.

Filler Neck Inspection

• Remove:

Left Lower Fairing (see Lower Fairing Removal in the frame chapter)

• Check the radiator filler neck for signs of damage.

• Check the condition of the top [A] and bottom sealing seats [B] in the filler neck. They must be smooth and clean for the radiator cap to function properly.

Radiator Cap Inspection

• Check the condition of the bottom and top valve seals [A],
valve spring [B] of the radiator cap.

* If any one of them shows visible damage, replace the cap
with a new one.

• Install the cap [A] on a cooling system pressure tester [B].

NOTE

О Wet the cap sealing surfaces with water or coolant to prevent pressure leaks.

• Watching the pressure gauge, slowly pump the pressure
tester to build up the pressure. The relief valve must open
within the relief pressure range as shown below. The
gauge hand must remain at least 6 seconds between the
lowest relief pressure and the valve opened pressure.

Radiator Cap Relief Pressure Standard: 93-123 kPa (0.95-1.25 kgf/cm²,14-18 psi)

• If the cap cannot hold the specified pressure, or if it holds
too much pressure, replace it with a new one.