grand dink 125 mmc 1 Workshop-manual : Page 245

          20. EXHAUST EMISSION CONTROL
    SYSTEM                                                               GRAND DINK 125/150

                                                                 (A)Type A.I.C.V
 SECONDARY AIR CLEANER /
 AIR INJECTION CUT-OFF
 VALVE (A.I.C.V.)                                    Air Outlet Tube                  Air Inlet Tube
 REMOVAL
 Remove the seat.
 It is near battery location
 (B type A.I.C.V--seat normal design scooter)
 Remove the center cover.(A type A.I.C.V
 --seat lower design scooter)
 Disconnect the secondary air cleaner /(A.I.C.V)
 connecting tube.




                                                   Vacuum Tube


 INSPECTION
 Inspect the air injection cut-off valve flow                    (B)Type A.I.C.V
 using a vacuum pump. If the flow is not
 within the specified values, replace with a
 new one.
 The flow should be at least 30 liter/min                              Vacuum Tube
 when a vacuum of 250mm/Hg is applied.
 The flow should be at least 1.6 liter/min
 when a vacuum of 320mm/Hg is applied.
 Check each connecting tube for cracks or
 damage and replace if necessary.

 INSTALLATION

 The installation sequence is the reverse of
 removal.


                                                        Air Inlet Tube
 · The secondary air cleaner must be                                                 Air Outlet Tube
      assembled and installed properly to
      avoid dust entering the air cleaner.
    · When installing, be careful not to
      bend or twist the tubes and check for
      proper installation.
    · The tube length is very important to
      its performance, use the tube of
      same specification for replacement.



                                                                                             20-3