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IGNITION TIMING CHECK
IGNITION TIMING CHECK
1. Remove:
Air scoop
Spark plug
Left crankcase cover
2. Attach:
Dial gauge 1
Dial gauge stand 2
5PA30870
3. Rotate the rotor 1 until the piston reaches
top dead center (TDC). When this hap-
pens, the needle on the dial gauge will stop
and reverse directions even though the
rotor is being turned in the same direction.
4. Set the dial gauge to zero at TDC.
5PA30880
5. From TDC, rotate the rotor clockwise until
the dial gauge indicates that the piston is at
a specified distance from TDC.
6. Check:
Ignition timing
Punch mark a on rotor should be aligned
with punch mark b on stator.
Not aligned → Adjust.
5PA30890
3 - 36
INSP
ADJ
Dial gauge and stand:
YU-3097/90890-01252
Stand:
YU-1256
Ignition timing (B.T.D.C.):
0.9 mm (0.035 in)
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