Suzuki Wagon R Manual page 3914

ENGINE COOLING (Z10XEP AND Z12XEP ENGINES) 6B4-7
7) Disconnect coolant hose of upper side. If it is hard to discon-
nect it after removing clip, push to insert hose to pipe a little
further in order to unstick hose from pipe and disconnect it.
8) Remove degassing tank cap as follows.
a) Turn cap counterclockwise slowly.
b) Wait till any pressure is released, then continue turning it
counterclockwise.
9) Pour coolant (50/50 mixture of good quality ethylene glycol
antifreeze and water) to degassing tank up to "KALT/COLD"
mark (2). Put a shop cloth under disconnected hose end so
that coolant is not spilled on engine and floor because a
small amount of air bubbles and/or coolant may come out of
it.
10) Connect hose to thermostat case.
11) Run engine, with degassing tank cap removed, until radiator
inlet hose is hot.
12) With engine idling, add coolant to degassing tank (1) until
level reaches "KALT/COLD" mark (2).
Install degassing tank cap turning it clockwise up to stop.
Accessory Drive Belt Tension Inspection
1) Disconnect negative (–) cable at battery.
2) Inspect drive belt (1) for tension, cracks, cuts, deformation,
wear and cleanliness. If any defect exists, replace drive belt
referring to "Accessory Drive Belt Removal and Installation"
in this section.
3) Connect negative (–) cable at battery.