Section 07 ELECTRICAL SYSTEM
Subsection 01 (IGNITION SYSTEM)
CAUTION: If engine is to be run more than a
few seconds, engine must be cooled using the
flush kit.
NOTE: If mark on PTO flywheel is perfectly
aligned with timing mark pointer, no adjustment
is required. If mark does not align with pointer,
recheck PTO flywheel mark (static test) before
adjusting ignition timing to ensure PTO flywheel
has not loosen or tightened.
Ignition Timing Adjustment
CAUTION: If the ignition timing is adjusted too
advanced, this will cause serious damage to
the engine.
To adjust the timing, use the VCK (Vehicle Commu-
nication Kit (P/N 295 035 981)). Refer to ENGINE
MANAGEMENT for proper connections.
529 035 981
NOTE: For more information on the VCK, refer to
its online help.
Theignitiontimingcorrectioncanbemadefrom
4° (advanced) to - 4° (retarded).
The VCK will display directly the timing correction
under “Offset angle”. See illustration below.
smr2005-057-004_a
1. Actual angle
2. Activate arrow to change ancle
When the desired offset angle has been set, click
the WRITE DATA button.
NOTE: There will be an “EMS Tracking” message
that will say “Remove key from vehicle”.When
this occurs, remove the safety lanyard from its
post and wait until the message disappears (it
lasts approximately 15 seconds after lanyard re-
moval).
Recheck timing marks with stroboscopic lamp. If
adjustment is still needed, repeat procedure and
enter a new offset angle.
Remove timing tool and re-plug all connectors.
TESTING PROCEDURES
WARNING
Never check for engine ignition spark from
an open coil and/or spark plug in the engine
compartment as spark may cause potential
fuel vapor to ignite.
IGNITION COIL
Test with B.U.D.S.
NOTE: The ECM can detect open and short circuit
in the primary winding but it does not check the
secondary winding.
Using the vehicle communication kit (VCK) with
the B.U.D.S. software, energize the ignition coil.
smr2005-057 159
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