Suzuki Wagon R Manual page 3844

ENGINE MECHANICAL (Z10XEP AND Z12XEP ENGINES) 6A4-17
Exhaust Manifold Removal and Installation
WARNING:
To avoid danger of being burned, do not service exhaust
system while it is still hot. Service should be performed
after system cools down.
CAUTION:
Exhaust manifold have three way catalytic converter in it,
it should not be exposed to any impulse. Be careful not
to drop it or hit it against something
Removal
1) Disconnect negative cable (–) at battery.
2) Remove front bumper referring to "Front bumper and Rear
bumper" in Section 9.
3) Disconnect exhaust pipe from exhaust manifold referring to
"Exhaust System Components" in Section 6K4.
4) Remove horn (2).
5) Remove cover plate (1).
6) Disconnect HO2S-1 coupler (1), and then remove HO2S-1
(2) from exhaust manifold.