Cooling System Flush And Refill - Suzuki RA410 Manual

6B-6 ENGINE COOLING
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4) Using a pressure tester (1), check system and radiator cap (2)
for proper pressure holding capacity about 90 kPa (0.9 kg/cm
12.8 psi). If replacement of cap is required, use a proper cap for
this vehicle.
NOTE:
After installing radiator cap to radiator, make sure that the
ear of cap lines is parallel to radiator.
5) Tighten hose clamps and inspect all hoses. Replace hoses
whenever cracked, swollen or otherwise deteriorated.
6) Clean frontal area of radiator core.
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COOLING SYSTEM FLUSH AND REFILL

1) Remove radiator cap when engine is cool:
Turn cap counterclockwise slowly until it reaches a "stop".
(Do not press down while turning it.)
Wait until pressure is relieved (indicated by a hissing sound)
then press down on cap and continue to turn it counterclock-
wise.
WARNING:
To help avoid danger of being burned, do not remove
radiator cap while engine and radiator are still hot.
Scalding fluid and steam can be blown out under
pressure if cap is taken off too soon.
2) With radiator cap removed, run engine until upper radiator
hose is hot (this shows that thermostat is open and coolant is
flowing through system).
3) Stop engine and drain coolant.
4) Close drain plug. Add water until system is filled and run en-
gine until upper radiator hose is hot again.
5) Repeat steps 3) and 4) several times until drained liquid is
nearly colorless.
6) Drain system and then close radiator drain plug (1) tightly.
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