Things Not To Do To When Maintaining the Carburettor:
It is equally as important to know also the things ‘Not To Do’ when maintaining the carburetor as
damage to the body can hinder performance or even damage it beyond repair!
When tightening the carb top ensure not to torque the screw too tight; this can crack the
plastic and will cause a leak.
If the carburetor has not been re-kitted in a long time the gasket material can sometimes
stick to the body of the carburettor. This material should be removed but it is important not
to damage the surface of the body. Do not use a sharp object that will scratch or damage as
it can affect the sealing characteristic. We recommend using a very fine wire wool to remove
this material.
Ensure the inlet control lever (paddle) is flush to the body or if it is raised or lowered adjust
to only half the thickness of the lever itself. Be careful in making this adjustment – if set too
low there may be a gap between the metering diaphragm button and the lever which can
cause poor throttle response; if set too high it may contact the metering diaphragm button
and cause poor sealing at the inlet seat.
If fitting the inlet seat, ensure that the seat is on the correct thread. If it is cross-threaded it
will no longer seal and the carburettor will no longer function.
When re-seating (closing) the low and high speed jets do not use added force or force this
closed. This can increase the orifice opening and will cause a greater flow of fuel to enter the
passage meaning the optimum jet setting can change.
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