Checking The Ignition Timing - Yamaha VMX12 2001 Service Manual

CHECKING THE SPARK PLUGS/

CHECKING THE IGNITION TIMING

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7. Install:
• spark plug
NOTE:
@
Before installing the spark plug, clean the
spark plug and gasket surface.
@
8. Connect:
• spark plug cap
EAS00064
CHECKING THE IGNITION TIMING
NOTE:
@
Prior to checking the ignition timing, check the
wiring connections of the entire ignition sys-
tem. Make sure all connections are tight and
free of corrosion.
@
1. Remove:
• timing plug 1
2. Attach:
• timing light 1
• engine tachometer 2
(onto the spark plug lead of cylinder #1)
Timing light
90890-03141
Engine tachometer
90890-03113
3. Check:
• ignition timing
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified
engine idling speed.
Engine idling speed
950 ~ 1,050 r/min
CHK
ADJ
18 Nm (1.8 m · kg)