Yamaha YZ125N1 Service Manual page 53

COOLANT REPLACEMENT
cC
Take care so that coolant does not splash
on painted surfaces. If it splashes, wash it
away with water.
1. Place a container under the engine.
2. Remove:
9Coolant drain bolt 1
3. Remove:
9Radiator cap
Drain the coolant completely.
4. Clean:
9Cooling system
Thoroughly flush the cooling system with
clean tap water.
5. Install:
9Copper washer
9Coolant drain bolt
6. Fill:
9Radiator
9Engine
To specified level.
Recommended coolant:
Coolant 1 1 and water
(soft water) 2 2 mixing ratio:
Coolant capacity:
3-6
INSP
ADJ
10 Nm (1.0 m•kg, 7.2 ft•lb)
High quality ethylene glycol
anti-freeze containing
anti-corrosion for
aluminum engine
50%/50%
1.00 L (0.88 Imp qt, 1.06 US qt)