PIAGGIO B 250 - Page 55

CO check
- Remove RHS footrest.
- Remove the gas cap on the exhaust pipe.
- Using the original washer, install the exhaust gas
collection kit as shown in the picture.
- Suitably orientate all the components.
- Shut the gas outlet terminal of the tool.
- Start the engine and let it warm up until the elec-
tric fan activates.
- Stop the engine.
- Disconnect the SAS check valve vacuum hose
shown in the figure.
- Seal the connection using a conical a cap.
- Connect the Mitivac vacuum pump to the SAS
control valve.
- Start the vacuum pump up to a pressure of -0.6
÷ -0.8 bar so to close the valve and cut off the SAS
system.
- Remove the exhaust gas collection kit cap and
connect the analyzer adequately pre-heated.
- Check the analyser output and the engine rpm.
- Adjust the CO concentration.
N.B.
B 125-250 Maintenance
MAIN - 55