Radiator Cap/System Pressure Inspection; Coolant Replacement; Recommended Antifreeze; Recommended Mixture - Honda 2010 CRF250R Service Manual

COOLING SYSTEM
RADIATOR CAP/SYSTEM PRESSURE
INSPECTION
Remove the radiator cap (page
6~5).
Wer the sealing Install the radiator cap on the tester.
surface wIth waler.
Pressure test the radiator cap.
Replace the radiator cap if it does nol hold pressure. or
if the relief pressure is too high or 100 low.
I! must
hold the specified pressure for at least 6
seconds.
RADIATOR CAP RELIEF PRESSURE :
108 - 137 kPa (1 .1 - 1.4 kgffcm
1
,
16 - 20 psi)
Pressurize the radiator, engine and hoses, and check
for leaks.
I
NOTICE
I
Excessive pressure can damage the cooling system
components.
Do
not exceed 137 kPa (1.4 kgflcrrr.
20 psi).
Repair or replace components if the system will not hold
the specified pressure for al least 6 seconds.
After checking the pressure. install the radiator cap
securely.
COOLANT REPLACEMENT
PREPARATION
L
The effectiveness of coolant decreases with the
~-----
6-6
accumulation of rust or If there is a change In the RECOMMENDED ANTIFREEZE
mixing proportion during usage. Therefore, for best
performance, change the coolant regularly as
specified in the maintenance schedule.
Mix only distilled, low mineral water with the
antifreeze.
RECOMMENDED ANTIFREEZE :
Pro Honda HP Coolant or an equivalent high
quality ethylene glycol antifreeze containing
silicate-free corro sion inhi bitors
RECOMMENDED MIXTURE:
1:1 Mixture with distilled water
(ETHYLENE
GLYCOL BASE
SOLUTION )
LOW MINERAL
OR DISTILLED
WATER
COOLANT
1