Dear Customer,
We would like to provide you the following information. By end of 2005 (to improve the idle and respond of the carburettor) the calibration of the carburettor has been changed in the following way.
- Outer idle jet, size 30 to 60
- Inner idle jet, size 30 to 60
- Floats 5,2 gr. to 3,6 gr.
At the same time also the carburettor insert has been
- changed from 12.5 to 8.5
The figure 12.5 or 8.5 is an indication for the size of the
bypass hole just after the venturi (see arrow).
As both carburetor inserts (12.5 and 8.5) have been originally supplied with the engine, both carburettor inserts are legal to be used in the ROTAX MAX Challenge.
The actual serial production carburettor is equipped with a 8.5 carburetor insert.
To cover the ongoing demand for carburettors with insert 12.5, ROTAX offers a carburettor insert kit to enable an exchange from carburettor insert 8.5 to carburettor insert 12.5.
Carburettor insert kit 12.5
ROTAX part no.: 281 820
n Attention:
The exchange of the carburettor insert kit may be just executed by a trained ROTAX service center/dealer.