Honda SH300 2006 Manual page 170

FUEL SYSTEM (PGM-FI)
10.Disconnect the SCS connector from the DLC.
11.Install the dummy connector to the DLC.
12.Support the scooter with its centerstand.
Warm up the engine about ten minutes.
Connect the tachometer and check the idle
speed.
ENGINE IDLE SPEED: 1,500 ± 100 min
If the idle speed is out of the specification, check
the following:
– Throttle operation and throttle grip free play
(page 4-5).
– Intake air leak.
– IACV operation (page 6-77).
6-60
SCS CONNECTOR
DUMMY CONNECTOR
DLC
-1
(rpm)