GAS GAS TXT 2018 Series, Workshop Manual, Page: 20 / 84

Workshop manual
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- check that the cone at the end of the fuel flow control pin and the float
connector stud spring are in good condition, if not, replace with new ones.
- Check the condition of the fuel flow system piston valve. Replace it if
there is any damage to the vulcanised sealing seating or on the metal
body of the piston itself (scratches and/or corrosion exceeding 25% of
its total surface area).
- Thoroughly clean all of the components of the carburettor with solvent (take
care not to damage the carburettor float chamber gasket or the cold start
piston valve O-ring).
- With compressed air, thoroughly blow clean all air and fuel flow holes.
- With a set of scales, check the weight of the float against what is marked on
it. Replace if that weight is exceeded.
- Check the sizing of the jets against the numbering marked on them, fit
appropriate ones (see settings table), otherwise the performance of the
engine will be affected.
Carburettor disassembly and inspection