CHK
ADJ
3-8
EAS00062
CHECKING THE IGNITION TIMING
1. Remove:
• air scoop
• spark plug
• left crankcase cover
2. Attach:
• dial gauge
• dial gauge stand
3. Adjust:
• top dead center (TDC)
a. Rotate the rotor
until the piston reaches
top dead center (TDC)
. When this happens,
the needle on the dial gauge will stop and
reverse directions even though the rotor is
being turned in the same direction.
b. Set the dial gauge to zero at TDC.
c. From TDC, rotate the rotor clockwise until
the dial gauge indicates that the piston in at
a specified distance from TDC.
4. Check:
• ignition timing
Punch mark
on rotor should be aligned with
punch mark
on stator.
Not aligned
→
Adjust.
5. Adjust:
• ignition timing
a. Loosen the screws (stator)
.
b. Align the punch mark on the rotor with
punch mark on stator
by moving the sta-
tor.
c. Tighten the screws (stator).
Dial gauge and stand
90890-01252, YU-3097
Stand
YU-1256
Ignition timing (B.T.D.C.)
0.9 mm (0.035 in)
CHECKING THE IGNITION TIMING
