Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 503

6A4-14 ENGINE MECHANICAL (J20 ENGINE)
2) Install exhaust manifold.
3) Install seal ring and install exhaust No.1 pipe (1) to exhaust
manifold.
Before installing seal ring, check it for deterioration or dam-
age, and replace as necessary. Use new lock nuts if used.
Tighten pipe fasteners to specified torque.
Tightening torque
Exhaust No.1 pipe bolt or nut
(a) : 50 N·m (5.0 kg-m, 36.5 lb-ft)
4) Install exhaust manifold stiffener (1) if equipped.
Tighten exhaust manifold stiffener nut and bolt to specified
torque.
5) Install upper cover (2) to exhaust manifold.
6) Connect heated oxygen sensor-1 coupler (1) and fit coupler
to bracket securely.
7) Connect negative cable at battery.
8) Check exhaust system for exhaust gas leakage.