TOHATSU BFT250A Service Manual page 82

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MAINTENANCE
Wait until the engine speed stabilizes, and then check
the idle speed.
If the idle speed is outside the specification, adjust by
turning the idle adjusting screw [1] in or out.
BASE IDLE SPEED (AT NEUTRAL):
570 ± 30 min
disconnected)
After adjustment, stop the engine and apply Nippon
Paint Uni-pack 200 or equivalent to the entire surface of
the idle adjusting screw [1] head.
Connect the IAC valve 2P connector.
Reset the ECM (page 5-6).
Start the engine. Wait until the engine speed stabilizes
under no load, and recheck the idle speed.
SPECIFIED IDLE SPEED (AT NEUTRAL):
650 ± 50 min
If the idle speed is outside the specification, inspect and
troubleshoot the idle control system (page 4-6).
3-24
-1 (rpm) (with IAC valve connector
-1
(rpm)
[1]
[1] Apply here.