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INSP
ADJ
IGNITION TIMING CHECK
IGNITION TIMING CHECK
1. Remove:
● Timing plug 1
1
2. Attach:
● Timing light
● Inductive tachometer
To the ignition coil lead (orange lead
1).
3. Check:
● Ignition timing
Timing light:
YM-33277-A/90890-03141
Inductive tachometer:
YU-8036-B
Engine tachometer:
90890-03113
Checking steps:
● Start the engine and let it warm up. Let the
engine run at the specified speed.
● Adjust the engine idling speed.
Refer to “IDLE SPEED ADJUSTMENT”
section.
● Visually check the stationary pointer a is
within the firing range b on the rotor.
Incorrect firing range → Check rotor and
pickup assembly.
1
4. Install:
● Timing plug