Dometic i7800 Installation Manual page 50

Shift & throttle system
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DANGER
THIS PROCEDURE REQUIRES
TURNING A PROPELLER BY HAND
WITH THE IGNITION ON. USE
EXTREME CAUTION.
NOTICE
WARNING
C-8
6. Verify that the engine returns to neutral properly from both forward
and reverse gear. The propeller must freewheel in neutral. If it
doesn't, adjust the actuator side adjustment barrels until the
neutral position is correct. (See Section 4.2.2.1 for adjustment.)
7. Repeat items 2 to 6 for the starboard shift actuator if applicable.
8. Tighten the actuator side lock nut (see figure 4-13) for the shift
actuators. Once the final adjustments are made you will need to apply
Loctite
242 to the threads, but you will do this after the sea trial.
®
9. If your engine already has start-in-gear protection you can uncheck
the box labeled "Neutral switch connected.
It is not uncommon to have stroke length a little longer for the push
direction gear to take up the lost motion of the cable in the push
direction. This is more pronounced with longer cables.
THROTTLE
Successful installation of the throttle cables should accomplish the
following goals:
• To have throttle cables adjusted evenly so engines start to rev
up at the same time given the same throttle (handle) position.
• That throttle always returns to idle when handle(s) are moved to idle.
• That there is minimal handle travel before engines rev up.
• That the stroke length is set to achieve wide open throttle (WOT)
engine speed without unnecessary throttle cable movement.
Procedure
1. Turn ignition on, do not start engines.
2. Open the port throttle actuator in Datalink.
3. Increase the port throttle lever to the full throttle position and
verify that the throttle linkage reaches the wide open throttle
(WOT) position.
4. Increase the Throttle Stroke value in Datalink as necessary to
reach the WOT position. Click Write to save each change.
5. Repeat items 2–4 for the starboard throttle actuator if applicable.
6. Tighten the actuator side lock nut (see figure 4-13) for both throttle
actuators. Once the final adjustments are made you will need to apply
Loctite 242 to the threads, but you will do this after the sea trial.
7. The Idle Offset parameter is used to fine tune throttle response
and to synchronize the throttle actuation.
a. On some engines it may take a large amount of lever travel
before RPM starts to increase. You can reduce this deadband
by increasing the Idle Offset parameter, or by adjusting the
actuator adjuster barrels (section 4.2.2.2).
b. When both levers are advanced at the same time both engines
should start to increase RPM simultaneously. If they do not you
can adjust the Idle Offset parameter (or the actuator adjuster
barrels) until they are synchronized.
AFTER FINAL ADJUSTMENT IS MADE APPLY LOCTITE
AND TIGHTEN JAM NUT ON ACTUATOR SIDE.
®
242 (BLUE)

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I7700

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