Technical data

Section 08 ELECTRICAL SYSTEM
Sub-Section 02 (IGNITION SYSTEM)
08-02-7
TYPICAL
1. Retaining screw
Example 1
When PTO flywheel mark is on right side of timing
tool slot, it indicates advanced timing.
1. Too advanced timing
In this case, turn armature plate clockwise when
facing it.
Example 2
When PTO flywheel mark is on left side of timing
tool slot, it indicates retarded timing.
1. Retarded timing
In this case, turn armature plate counterclockwise
when facing it.
After adjustment, tighten armature plate retaining
screws.
CAUTION : Armature plate screws must
have Loctite 242 (blue) applied before
tightening. Make sure armature plate screws
are well secured.
Reinstall removed parts. Refer to ELECTRICAL
SYSTEM 08-01.
Recheck ignition timing (make sure engine is
cold).
Repeat armature plate positioning procedure if
timing mark position is not adequate.
787 Engine
Since the trigger coil on this engine is fixed and
not movable to correct the ignition timing, the
MPEM programmer (P / N 295 000 127) is now
used to set the timing when an adjustment is re-
quired. The programmer will act as if you were
moving the trigger coil to advance or retard the
ignition timing.
NOTE : For more information on the pro-
grammer, refer to its guide.
Through the MPEM programmer, the ignition tim-
ing can be advanced up to 3° or retarded up to 4°.
If the timing is adjusted too retarded, a perfor-
mance decrease of the engine will be noticed. If
the timing is adjusted too advanced, serious en-
gine damage will occur.
CAUTION : If the ignition timing is adjust-
ed too advanced, this will cause serious
damage to the engine.
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F01H5UA
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