Evinrude & Johnson E75DPLSCB, Service Manual

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142
ELECTRICAL AND IGNITION
TIMING ADJUSTMENTS
TIMING ADJUSTMENTS
Timing Pointer
The timing pointer must be adjusted to indicate
top dead center (TDC) of the number 1 piston.
This reference to the position of the number 1 pis-
ton is used to synchronize the electronic timing
controlled by the
EMM with the mechanical posi-
tion of the number 1 piston.
Use Evinrude Diagnostics software to verify and
adjust timing. Refer to the software’s help system
for outboard timing verification procedures.
Remove spark plugs. Rotate the flywheel clock-
wise to 30° ATDC.
Install Piston Stop Tool, P/N 342679, into the
spark plug hole of the number 1 cylinder.
Rotate flywheel
counterclockwise
until the num-
ber 1 piston contacts the tool. Keep pressure on
the flywheel to position the piston firmly against
the tool. Mark the flywheel directly across from the
pointer. Label this mark “A.”
Rotate the flywheel
clockwise
until the piston
contacts the tool. Mark the flywheel directly across
from the pointer. Label this mark “B.” Rotate fly-
wheel
counterclockwise
slightly to release tool
then remove it from spark plug hole.
Use a flexible measuring device to find the exact
center between marks “A” and “B.” Measure along
the edge of the flywheel. Mark and label the cen-
ter point “C.” If mark “C” and the cast-in TDC boss
on flywheel are in alignment, the timing pointer is
in the correct location.
If the pointer alignment is NOT correct, rotate the
flywheel
clockwise
to align the mark “C” with the
pointer. Hold the flywheel in this position. Loosen
the pointer retaining screw and adjust the pointer
location to align with the cast-in TDC boss on the
flywheel. Tighten retaining screw.
WARNING
To prevent accidental starting while ser-
vicing, remove emergency stop lanyard
and disconnect the battery cables at the
battery.
1. Piston stop tool 006493
1
1. Timing pointer 006552
1. Mark “A’”
2. Mark “B”
3. Mark “C”
4. TDC boss
002092
1
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