PERIODIC MAINTENANCE 2-15
7.
Open the throttle valve to turn the CTP switch off.
NOTE:
The fixed mode of the IAC valve duty can be manually cancelled
by turning the CTP switch off.
8. Close the throttle valve and then recheck the engine speed.
It should now be stable at 650 – 750 r/min.
NOTE:
The idling/trolling speed of 650 – 750 r/min is controlled by the
IAC (idle air control) system.
If the engine speed does not return to the specification, the IAC
passage (including the IAC hose) may be clogged or the IAC
system may not be operating correctly.
See the “IDLE AIR CONTROL SYSTEM” section on the page 3-
21.
NOTE:
The trolling speed (in-gear idle speed) is the same as the idel
speed.
IGNITION TIMING
Inspect every 200 hours (12 months).
NOTE:
Before checking the ignition timing, make sure that the idle
speed is adjusted within the specification.
1. Start and warm up the engine.
2. Attach the timing light to the No.1 spark plug high-tension
cord.
!
09930-76420: Timing light
09900-26006: Engine tachometer
3. Check the ignition timing while operating the engine at 1000
r/min.
Ignition timing: Approx. BTDC 10° at 1000 r/min
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Страница 52: ...3 4 ENGINE CONTROL SYSTEM WIRING DIAGRAM FOR ENGINE CONTROL ENGINE CONTROL MODULE ...
Страница 55: ...ENGINE CONTROL SYSTEM 3 7 ECM INTERNAL STRUCTURE ...
Страница 282: ...Prepared by Marine Power Products Division 1st Ed September 2002 Manual No 99500 99E10 01E Printed in Japan 284 ...
Страница 283: ...TK Printed in Japan K3 ...