Yamaha WR250XZ(C Owner's Manual page 62

PERIODIC MAINTENANCE AND ADJUSTMENT
1
1. Bolt
2. Coolant reservoir
6. Remove the coolant reservoir cap.
7
1. Coolant reservoir cap
7. Drain the coolant from the coolant
reservoir by turning it upside down.
8. Install the coolant reservoir by
placing it in the original position,
and then installing the bolts.
9. Remove the coolant drain bolt and
its gasket to drain the cooling sys-
2
tem.
1
1. Coolant drain bolt
2. Gasket
1
10. After the coolant is completely
drained, thoroughly flush the cool-
ing system with clean tap water.
11. Install the coolant drain bolt and its
new gasket, and then tighten the
bolt to the specified torque.
Tightening torque:
Coolant drain bolt:
12. Pour the specified amount of the
recommended coolant into the ra-
diator and reservoir.
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
7-17
Antifreeze/water mixture ratio:
1:1
Recommended antifreeze:
High-quality ethylene glycol anti-
freeze containing corrosion inhibi-
tors for aluminum engines
Coolant quantity:
Radiator capacity (including all
2
routes):
0.90 L (0.95 US qt, 0.79 Imp.qt)
Coolant reservoir capacity (up to the
maximum level mark):
1
0.25 L (0.26 US qt, 0.22 Imp.qt)
13. Install the coolant reservoir cap.
14. Install the radiator cap.
15. Start the engine, let it idle for sev-
eral minutes, and then turn it off.
16. Remove the radiator cap to check
the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the top of the radia-
tor, and then install the radiator
cap and its retaining bolt.
17. Check the coolant level in the res-
ervoir. If necessary, remove the
coolant reservoir cap, add coolant
to the maximum level mark, and
then install the cap.