Coolant Replacement - Honda SH125 Manual

COOLING SYSTEM
RADIATOR CAPISYSTEM PRESSURE
INSPECTION
Remove the radiator cap (page 6-6).
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 a t least
6
seconds.
RADIATOR CAP RELIEF PRESSURE:
108
-
137 kPa (1.1
-
1.4 kgf/cm2, 16
-
20 psi)
Pressure test the radiator, engine and hoses, and
check for leaks.
C I
Excessive pressure can damage the cooling system
components. Do not exceed 137 kPa (7.4 kgf/cm2, 20
Repair or replace components if the system will not
hold the specified pressure for a t least
6
seconds.
Remove the tester and install the radiator cap.
Install the front upper cover (page 2-8).
psi).
COOLANT REPLACEMENT
PREPARATION
I
NOTICE
I
Using coolant with silicate corrosion inhibitors may
cause premature wear of water pump seals or
blockage
of
radiator passages. Using tap water may
cause engine damage.
NOTE:
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 i n the maintenance schedule.
Mix only distilled, low mineral water with the rec-
ommended antifreeze.
RECOMMENDED ANTIFREEZE:
High quality ethylene glycol antifreeze containing
corrosion protection inhibitors
RECOMMENDED MIXTURE:
1:l (distilled water and the recommended
antifreeze)
SOLUTION) OR DISTILLED
6-7