Yamaha DT501988 Owner's Manual page 58

Tightening torque:
Drain bolts:
Cylinder side
14 Nm (1.4 m·kg, 10 ft·lb)
Housing cover side
8 Nm (0.8 m·kg, 6 ft·lb)
f. Pour the recommended coolant into the
radiator is full.
Recommended coolant:
High quality ethylene glycol
anti-freeze containing corrosion
inhibitors for aluminum engines.
Coolant and water mixed ratio:
50%/50%
Total amount:
O.?
L (0.53 Imp qt, 0.63 US qt)
Reservoir tanJ< capacity:
0.3fl L (0.33 Imp qt, 0.40 US qt)
From LOW to FULL level:
0.20 L (0,18 Imp qt, 0.21 US qt)
7-10
U-309
Hard water or salt water is harmful to
the engine. You may use distilled water
if you can't get soft water.
g. Reinstall the radiator cap.
h. Run the engine several munutes to re-
check the coolant level in the radiator.
If it is low, add more coolant until it
reachez the top of the radiator.
1. "FULL" level 2. "LOW" level