Secondary air injection, non-returnvalve
| Secondary air injection, non-return valve | 
| To remove | 
Disconnect the hose. Disconnect and remove the valve.
| To check | 
Check that the valve does not allow exhaust gases to escape in the reverse direction.
| To fit | 
Fit in reverse order.
Tightening torque: 25 Nm (18.4 lbf ft)
Note the tapered pipe threads.

 
     
		