Suzuki Wagon R Manual page 73

1B-14 AIR CONDITIONING (OPTIONAL)
"a"
2
A/C COMPRESSOR DRIVE BELT INSPECTION
1) Check belt for wear and cracks, and replace as required.
2) Check belt tension by measuring how much it deflects when
pushed at intermediate point between compressor pulley (1)
and crankshaft pulley (2) with about 100 N (10 kg, 22 lbs) force.
"a" : 7 – 9 mm (0.27 – 0.35 in.) as deflection/
100N (10 kg, 22 lbs)
1
If belt tension is without above specification, adjust belt tension
by according to following items.
i) Loosen tension pulley bolt (3).
ii) Adjust belt tension by tighten or loosen tension pulley adjust
bolt (4).
iii) Tighten tension pulley bolt (3).
iv) Turn the crank pulley one revolution, then check belt tension.