Section12ELECTRICALSYSTEM
Subsection 01 (IGNITION SYSTEM)
F00H0HA
1
1. Timing light pick-up
IMPORTANT: To check the ignition timing, the
timing advance curve must be locked first. This
allows to perform ignition timing at any RPM by
keeping the timing “frozen” so that it does not
vary with engine RPM. See FIXED TIMING FUNC-
TION for more information.
NOTE: Fixed Timing function must be activated
before starting engine when using the MPEM pro-
grammer. When using B.U.D.S., it must be acti-
vated after starting the engine.
– Start engine and point the beam of a timing light
on mark.
F06H07A
1
1. Timing light straight in line with tool slot
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 before adjusting igni-
tion timing to ensure PTO flywheel has not loosen
or moved.
Ignition Timing Adjustment
717 Engines
Remove magneto housing cover and wire sup-
port.
For removal of magneto, refer to MAGNETO SYS-
TEM.
Timing is performed by moving armature plate;
clockwise to retard spark occurrence or counter-
clockwise to advance.
A25E0RA
1
2
TYPICAL
1. To retard
2. To advance
To adjust, loosen 3 armature plate retaining
screws and slightly rotate armature plate in prop-
er direction.
NOTE: As a guideline, turn the armature plate the
same amount needed to align mark on PTO fly-
wheel.
548 smr2004-Complete Line Up
To Next Page
Loading...
Need help?
General
