TOHATSU BFT115A Service Manual page 71

IDLE SPEED INSPECTION/
ADJUSTMENT
INSPECTION
Check the following before starting the idle speed
inspection.
• Spark plug inspection (page 3-17)
• MIL must be OFF.
Turn the combination switch OFF.
Place the outboard motor vertically (with the engine
level to the ground), and set the remote control lever in
the "N" (Neutral) position.
Remove the engine cover.
Set the outboard motor gear case in a test tank filled
with water.
USING THE HDS
Remove the dummy connector (1) from the DLC and
connect the HDS (2).
Start the engine and let it warm up sufficiently.
Wait until the engine speed stabilizes under no load,
and check the idle speed.
SPECIFIED IDLE SPEED (AT NEUTRAL):
750 ± 50 min
• When the idle speed is out of specification, or when
a problem symptom shown on the idle control
system troubleshooting (page 4-7) appears, perform
the adjustment as follows.
USING THE DIGITAL TACHOMETER (KOWA: KEK-
8-MT600)
Remove the dummy connector (1) from the tacho pulse
2P connector (2).
Connect the connector cable (KOWA: KEK-8-MT600-
ATHM) (3) to the tacho pulse 2P connector.
Connect the connector cable pin jack, that is the
opposite side from the 2P connector, to the digital
tachometer (KOWA: KEK-8-MT600) (4).
Start the engine.
Wait until the engine speed stabilizes under no load,
and check the idle speed.
SPECIFIED IDLE SPEED (AT NEUTRAL):
750 ± 50 min
• When the idle speed is out of specification, or when
a problem symptom shown on the idle control
system troubleshooting (page 4-7) appears, perform
the adjustment as follows.
-1 (rpm)
-1 (rpm)
MAINTENANCE
(2)
(4)
(1)
(2)
(1)
(3)
3-13