Honda SH300I 2006, Manual

Page: 196 / 511

COOLING SYSTEM
7-6
RADIATOR CAP/SYSTEM PRESSURE
INSPECTION
Remove the radiator cap (page 7-5).
Wet the sealing surfaces of the cap, then install the
cap onto tester.
Pressurize the radiator cap using the tester.
Replace the radiator cap if it does not hold pressure,
or if relief pressure is too high or too low. It must
hold the specified pressure for at least 6 seconds.
Pressure test the radiator, engine and hoses, and
check for leaks.
Excessive pressure can damage the cooling system
components. Do not exceed 137 kPa (1.4 kgf/cm
2
, 20
psi).
Repair or replace components if the system will not
hold the specified pressure for at least 6 seconds.
Remove the tester and install the radiator cap.
Install the radiator maintenance lid and tighten the
screw.
COOLANT REPLACEMENT
PREPARATION
• The effectiveness of coolant decreases with the
accumulation of rust or if there is a change in the
mixing proportion during usage. Therefore, for
best performance change the coolant regularly
as specified in the maintenance schedule.
• Mix only distilled water with the antifreeze.
RADIATOR CAP RELIEF PRESSURE:
108 – 137 kPa (1.1 – 1.4 kgf/cm
2
, 16 – 20 psi)
TESTER
RADIATOR CAP
TESTER
RECOMMENDED ANTIFREEZE:
High quality ethylene glycol antifreeze containing
corrosion protection inhibitors
RECOMMENDED MIXTURE:
1:1 (distilled water and the recommended
antifreeze)
ANTIFREEZE
SOLUTION
LOW MINERAL
OR DISTILLED
WATER
(ETHYLENE
GLYCOL BASE
SOLUTION)
COOLANT