Section 06
ELECTRICAL
Subsection 02
(IGNITION TIMING)
MMR2004-130_06_02A.FM
06-02-9
TYPICAL
1. TDC gauge on MAG side
2. MAG side piston at TDC
b. Assemble the gauge to the adaptor and tight-
en the roller lock nut. Do not tighten the adap-
tor lock nut.
c. Screw the adaptor into the spark plug hole
and tighten to prevent movement in the plug
hole.
d. Position the dial face toward the PTO. Move
the gauge down until the needle just begins
to move, then move down a further 5 or 6 mm
(approximately 1/4 in). Tighten adaptor lock nut
by hand.
3. Locate the piston TDC position as follows:
a. Slowly rotate the drive pulley back and forth
across TDC while observing the needle. Note
that the needle stops moving only as the pis-
ton is changing direction.
b. Rotate the dial face so that “0” is in line with
the needle when it stops moving.
c. Again, slowly rotate the drive pulley back and
forth across TDC and adjust the dial face to
“0”, until the needle always stops exactly at
“0” before changing direction.
d. “0” now indicates exact TDC.
4. Rotate the drive pulley clockwise, one-quarter
turn then carefully rotate it counterclockwise
until the needle indicates the specified mea-
surement, indicated in TECHNICAL DATA.
5. Twist a wire as shown and use it as a pointer.
Install the wire on upper starter bolt.
TYPICAL
1. Pointer
6. With the TDC gauge indicating specified timing,
scribe a mark on drive pulley fixed half in line
with pointer end.
TYPICAL
1. TDC gauge indicating specified timing
A06E2BA
1
2
1
A29E0RA
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A29E0SA
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