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Derbi BOULEVARD 50 2T Workshop Manual page 34

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Maintenance
- If the parameters found do not agree with the above figures, act upon the idle adjusting screw. Oth-
erwise, check the automatic choke device
Specific tooling
020320Y Exhaust gases analyser
020332Y Digital rpm indicator
The check must be carried out after having care-
fully cleaned all carburettor components, with the
air filter clean, and the spark plug in good condi-
tions.
- Remove the R.H. side fairing
- Warn-up the engine by riding the vehicle on the
road for at least 10 minutes
- Shut down the engine
- Remove the 2 secondary air box screws shown
in the figure
− Place a plastic sheet between the one-way valve
and the aluminium outlet as shown in the figure
− Ensure the one-way valve packing properly
seals the aluminium outlet fitting.
− Refit the aluminium outlet onto the SAS box as
shown in the picture.
MAIN - 34

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