4
Workshop manual RR 4T - 400 - 450 - 525
Removing and reinstalling the carburettor
NOTE: Before starting work on the carburettor, thoroughly clean
the vehicle.
– Remove the saddle and the fuel tank with the deflectors.
– Unscrew the throttle twist grip.
– Loosen the clamp screw on the float chamber, drain the fuel
into a suitable container, then tighten the screw again.
– Unplug the valve sensor connector.
– Disconnect the sleeve.
– Remove the carburettor from the frame top.
Collect the petrol in a suitable container and remove any
spills. Petrol is highly flammable and, in certain condi-
tions, explosive. Keep sparks, flames and heat sources
away from the working area. Always work in a well ventilated
area. Never use petrol as a cleaning solvent. Handle petrol on-
ly if absolutely necessary. Do not use petrol to clean compo-
nents that need to be blown with compressed air. Keep out of
the reach of children.
– When refitting, fit the carburettor to the sleeves and fasten it
with the two hose clamps. Ensure that the carburettor is fitted
vertically in relation to the vehicle.
– Refit the throttle twist grip and check that the cables can slide
freely.
– Attach the valve sensor plug.
– Fit the tank and the saddle.
– Properly arrange the carburettor breather pipes.
– Start the engine and check the operation of the carburettor.
The engine speed should not change when the handlebars
are fully turned to the left or right. If the engine speed
changes, check the arrangement of the throttle cables.
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