Idle Speed Inspection; Adjustment - TOHATSU 200 Series Service Manual

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IDLE SPEED INSPECTION/

ADJUSTMENT

INSPECTION
Check the following before starting the idle speed
inspection.
– Battery must be in good condition
– Boat equipment (electrical loads) must be removed
– Spark plug inspection (page 3-4)
– MIL must be 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.
Remove the propeller. 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.
Wait until the engine speed stabilizes under no load,
and check the idle speed.
SPECIFIED IDLE SPEED (AT NEUTRAL):
650 ± 50 min
• When the idle speed is outside the specification,
perform the following procedure.
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):
650 ± 50 min
• When the idle speed is outside the specification,
perform the following procedure.
-1
(rpm)
-1
(rpm)
[1]
[2]
[3]
MAINTENANCE
[2] [1]
[4]
3-5