PRE-RELEASE

Secondary air injection non-returnvalve

Secondary air injection non-return valve

To remove

Disconnect the hose, undo and remove the valve.

To check

Check that the exhaust gases do not escape from the valve in the reverse direction.

To fit

Fit in reverse order.

Tightening torque 25 Nm (18.4 lbf ft)

Note the tapered pipe threads.