2-18 PERIODIC MAINTENANCE
ENGINE COOLANT
ENGINE COOLANT LEVEL CHECK
• Remove the radiator cap
1
.
• Check that the engine coolant level is at the bottom of the inlet
hole. If not, replenish the radiator with specified engine cool-
ant.
• Tighten the radiator cap securely.
NOTE:
* This motorcycle does not have an overflow tank at the end of
breather hose. Therefore, engine coolant level may decrease
while riding. Check the engine coolant level every time before
riding.
* When replenishing engine coolant, be sure to use engine cool-
ant mixed with distilled water at the ratio of 50:50. Adding only
water will dilute engine coolant and it may decrease cooling
performance.
* If the motorcycle is to be exposed to temperatures below –31°C
(–24°F), the percentage of antifreeze should be increased to
55% or 60%, according to figure 1.
* You can be injured by scalding fluid or steam if you
open the radiator cap when the engine is hot.
* Do not open the radiator cap when the engine is hot.
Wait until engine cools.
* Improperly tightening the radiator cap will prevent
the cooling system from reaching the specified oper-
ating pressure and will cause coolant overflow.
* Tighten the radiator cap until it locks firmly.
Antifreeze density
Freezing point
50%
– 31°C (– 24°F)
55%
– 40°C (– 40°F)
60%
– 55°C (– 67°F)
-70
20
40
60
80
100
-60
-50
-40
-30
-20
-10
0
-94
-76
-58
-40
-22
-4
14
32
Density (%)
Fig. 1 Engine coolant density-freezing point
F
reezing point
