to removal. With the valve installed adjust the
operating cable as follows.
31 Observe the movement of the jet housing
beneath the carburettor while an assistant
slowly operates the choke control.
32 When the jet housing has moved down
away from the adjusting nut by 0.25 to 0.38
mm, lock the choke control to hold it in this
position (see illustration).
33 The clearance between the diverter valve
operating lever and the valve stem should
now be 0.04 to 0.08 mm. Adjust the position
of the cable retainer to obtain this dimension.
Gulp valve
34 To remove the gulp valve slacken all the
hose clips, and detach the air hoses and the
vacuum hose from the valve body.
35 Undo and remove the two retaining nuts
and bolts and lift the valve off its mounting
bracket.
36 Refitting is the reverse sequence to
removal.
8 Exhaust emission control
system - checking and
component renewal
2
Note: The following procedures apply to
those models with a catalytic converter.
Checking
1 Checking of the system as a whole entails a
close visual inspection of all hoses, pipes and
connections for condition and security. High
exhaust gas CO content on carburettor
models may be due to other fuel or ignition
system faults such as dirty or choked air
cleaner element, worn or incorrectly adjusted
carburettor, worn or badly adjusted spark
plugs or incorrect ignition timing. Apart from
these checks, and checks of the general
engine condition, any known or suspected
faults in the exhaust emission control system
should be attended to by a Rover dealer.
Component renewal
Catalytic converter
2 Removal and refitting procedures for the
catalytic converter are contained in Section 3;
general information and precautions are
contained in Section 9.
Lambda sensor - fuel injection models
Note: The Lambda sensor is delicate, and will
not work if it is dropped or knocked, if its
power supply is disrupted, or if any cleaning
materials are used on it.
3 Remove the inlet manifold as described In
4C•8 Exhaust and emission control systems
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