Beta RR 4T - 250, Workshop Manual

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– Position the float and the needle valve and fit float pin 1 .
– Check the float level (see page 14).
– Fit the carburettor float chamber complete with its gasket, po-
sition adjusting screw support 2 and fasten the float chamber
by means of screws 3 .
When fitting the carburettor float chamber, ensure that
accelerating pump push rod
4 slides into the hole.
– Fit diaphragm 5 with the inscription facing upwards and the
spring in the pump casing.
– Fit O-ring 6 in the groove. Fix seal ring 7 in the cover with a lit-
tle grease and fasten the cover with the three screws.
– Fit the throttle sensor so that the flat area on the carburettor
engages the throttle sensor slot and fasten it by means of
screws
10 .
– Pull up the throttle valve lever and insert the throttle valve
along with roller 8 and the plate in the carburettor, ensuring
that rollers 9 engage the throttle valve (see figure).
– Check the smoothness of the throttle valve.
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Workshop manual RR 4T - 400 - 450 - 525
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