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Checking and adjusting fuel level in float 2. Checking fuel level using the jig illustrated
chamber in Fig. 22a
Check and adjust the fuel level after every
renewal of the fuel float or if the fuel leaks from After having adjusted, the fuel level mechanically
the carburettor and the leakage is not due to a it is recommended to check the adjustment
defective float or needle. Fuel level adjusting pro- with the help of the jig which you can make
cedure:-. of plexiglass (Perspex) according to the drawing.
Screw the jig on to the float chamber (bottom
1. Rough (mechanical) adjustment -- see Fig. 22 drain screw) and admit fuel into the carburettor.
Its level should reach the centre index line with
With the carburettor removed from the engine, a tolerance of ± 1 mm. If this is not the case, ad-
remove the float chamber cover. Turn the carbu- just the floats by bending the arms upward
rettor so that the floats are directed upwards, or downward as necessary. The fuel level adjusted
Check that the floats move freely on the spindle in this way complies with the manufacturer's
and that they are perpendicular to the carburettor requirements. When checking the fuel level in the
centre line. Check also their height which must carburettor removed from the engine, it is necessary
reach the level of the venturi tube top edge. If to observe the same height of the pressure column
this is not the case, adjust the height of both floats as exists between the fuel tank and the carburettor
by bending the arms. Floats adjusted in this way fitted on the engine.
should maintain the fuel in the float chamber
at the correct level.
ZVL model 210 Workshop Manual Page 15 jkw
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