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COOLANT
Coolant Recommendation
Use Pro Honda HP coolant or an equivalent high qual-
ity ethylene glycol based anti-freeze containing corro-
sion protection inhibitors specifically recommended for
use in aluminum engines (See anti-freeze container la-
bel).
CAUTION:
•
Hard water or salt water is harmful to aluminum.
The factory provides a 50/50 mix of anti-freeze and
water in your CRF. This mixture is recommended
for most operating temperatures and provides good
corrosion protection. A higher concentration of an-
tifreeze decreases the cooling system performance
and is recommended only when additional protec-
tion against freezing is needed. Using less than 40%
anti-freeze will not provide proper cooling or cor-
rosion protection.
•
Using coolant with silicate inhibitors may cause pre-
mature wear of water pump seals or blockage of
radiator passages. Using tap water may cause en-
gine damage.
Coolant Level
•
Never remove the radiator cap when the engine is
hot. The coolant is under pressure and severe scald-
ing could result.
1. With the engine cold, remove the radiator cap and
check coolant level. The coolant level is correct when
it is at the bottom of the radiator filler neck.
WARNING
(1) RADIATOR CAP
Other viscosities shown in the chart below may be used
when the average temperature in your riding area is
with in the indicated range.
4. SERVICE AND MAINTENANCE
JASO T 903 standard
The JASO T 903 standard is an index to choose engine
oils for 4-stroke motorcycle engines.
There are two classes: MA and MB.
Oil conforming to the standard has the following clas-
sification on the oil container.
(1) CODE NUMBER OF THE SALES COMPANY OF THE
OIL
(2) OIL CLASSIFICATION
2. Add coolant up to the filler neck if the level is low.
NOTE :
•
Inspect the coolant level before each outing. A
coolant loss of 0.7 – 2.0 US oz (20 – 60 cm
3
, 0.7 – 2.1
Imp, oz) through the over flow tube is normal. If
coolant loss is more than this, inspect the cooling
system .
Capacity: 1.18 US qt (1.12 Iiter, 0.99 Imp qt)
at disassembly
1.09 US qt (1.03 Iiter, 0.91 Imp qt)
at coolant change
3. Install the radiator cap securely.
CAUTION:
•
If the radiator cap is not installed properly, it will
cause excessive coolant loss and may result in over-
heating and engine damage.
Cooling System Inspection
1. Check the cooling system for leaks (see the Honda
Service Manual for troubleshooting of leaks).
2. Check water hoses for cracks, deterioration, and
clamp bands for looseness.
3. Check the radiator mount for looseness.
4. Make sure the overflow tube is connected and not
clogged.
5. Check the radiator fins for clogging.
6. Check the water leakage check hole below the wa-
ter pump for leakage. Make sure the hole remains
open. If water leaks through the check hole, the water
pump seal is damaged. If oil leaks through the check
hole, the transmission oil seal is damaged. See the
Honda Service Manual or consult your authorized
Honda dealer for replacing the water pump seal or
the transmission oil seal. Both seals should be re-
placed at the same time.
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