Reliant Rebel 700 1967 Workshop Manual page 78

Inspect the economy device to ensure that the diaphragm is intact
and the gasket in sound condition. Similarly check the accelerator
pump diaphragm.
If there are signs of richness during idling the carburettor may be
flooding. The float needle and float should be inspected for wear or
damage and renewed if necessary. These components are
recommended for replacement every 15,000 m (24,000 km).
A defective fuel pump can also cause flooding due to excessive
pressure overrunning the float needle valve. If this is the case the
pump should ideally be renewed.
Fuel leakage will also increase fuel consumption significantly.
Poor Acceleration
Check that the accelerator pump diaphragm is sound. Remove the
pump jet and ensure it is completely clear. Check the rubber "O" ring
sealing the jet to the carburettor body.
"Flat spots" or hesitation on progressive opening of the throttle can
usually be eliminated by careful adjustment of the slow running
mixture (volume) screw.
Loss of power
Check jet sizes are correct and make certain that all jets and internal
passages are clear from obstructions and that the throttle is fully
opening.
Accelerator pedal mechanism (Figure 5)
To remove
1. Remove two ¼" UNF set screws, nuts and washers securing
the accelerator cross-shaft pivot plate to the engine
bulkhead. An assistant will be required to hold the two nuts
when removing the set screws.
2. Release the linkage clip and disconnect the intermediate
connecting rod from the operating lever.
3. Unhook the throttle return spring from the operating lever.
4. Slacken the 5/16" UNF nut and bolt securing the operating
lever to the accelerator cross-shaft. Note the position and
angle of the lever.
5. Remove the two split pins located either side of the cross-
shaft pivot bracket.
6.
Slide the accelerator cross-shaft to the right sufficiently to
allow the removal of the operating lever and cross-shaft
plate.
7.
Unscrew the two ¼" UNF set screws, nuts and washers and
detach the cross-shaft pivot bracket from inside the foot
well.
8. Completely withdraw the accelerator cross-shaft through
the right-hand foot well and remove from the vehicle.
To replace
1. Position the pivot bracket, complete with grommet and
location washers, on to the accelerator cross-shaft.
2.
Locate the cross-shaft in the r/h foot well. Insert through
the bulkhead grommet and fit the operating lever and
cross-shaft pivot plate.
3. From inside the foot well, fit both split pins to prevent
lateral movement of the shaft.
4. Secure the pivot bracket to the body using two ¼" UNF set
screws, nuts and washers.
5. Using two 1/4" UNF set screws, nuts and washers, fit the
cross-shaft pivot plate to the engine bulkhead.
6.
Retighten the operating lever fixing bolt, first ensuring that
the lever is at the original angle and position that it was in
prior to dismantling.
7.
Reconnect the intermediate connecting rod to the lever and
fit the linkage clip.
8. Hook the throttle return spring on to the operating lever.
Ensure also that the spring is securely located firmly on the
clip fixed to the foot well.
Check the operation of the accelerator mechanism, road test the
vehicle and make any necessary adjustments.
Air Cleaner (Figure 6)
Early Vehicles
The air cleaner is mounted on to the intake of the carburettor and
held firmly by a rubber sleeve and a jubilee clip.
To remove filter element
1. Slacken the jubilee clip and lift the air cleaner assembly
clear of the vehicle, to prevent dirt falling in to the
carburettor.
2. Remove the clamping screw on the side of the air cleaner
body and dismantle the complete assembly. Remove the
element.
3. The paper element cannot be cleaned and must always be
renewed.
4. Thoroughly clean the base plate, main body and top plate,
then reassemble with a new element. Ensure the fixing
clamp firmly secures all the components.
5. Replace the air filter assembly on to the carburettor and
tighten the jubilee clip.
Later vehicles (sealed engine)
The air cleaner on later engines is similar, but now incorporates a pipe
from the engine breather (from the oil filler cap) to pass crankcase
fumes through the carburettor to be burned in the engine to help
control emissions.
To remove filter element
1. Remove oil filler cap from the rocker cover.
2. Unscrew the small screw in the centre of the air filter lid
and lift the air filter off the carburettor and clear of the
vehicle, complete with hose and oil filler cap.
3. To prevent dirt entering the carburettor, pull out the choke
knob fully before removing the air filter.
4. Remove the filter element. Never re-use or clean a used air
filter. The oil filler cap has an internal gauze filter which
should be inspected and cleaned using paraffin. If the gauze
is missing/damaged/rusted then the cap must be renewed.
5. Clean all components and reassemble with a new filter
element. Refit the assembly to the carburettor with the
small screw, and refit the oil filler cap.
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