3-19
CHK
ADJ
CHECKING THE IGNITION TIMING
EAS00062
CHECKING THE IGNITION TIMING
NOTE:
Prior to checking the ignition timing, check the
wiring connections of the entire ignition system.
Make sure all connections are tight and free of
corrosion.
1. Drain:
8
coolant
(completely from the radiator )
2. Remove:
8
radiator cover
8
radiator
8
fan case
Refer to “RADIATOR”in chapter 6.
3. Attach:
8
timing light
1
8
engine tachometer
2
(onto the spark plug lead of cylinder)
Timing light
90890-03141
YU-03141
Engine tachometer
90890-03113
YU-08036-C
4. Check:
8
ignition timing
*****************************************************
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
Engine idling speed
2000 ~ 2400 r/min
b. Check that the mark
a
on the AC mag-
neto rotor is within the firing range
b
on
the right crankcase cover.
Incorrect firing range
J
Check the ignition
system.
2
a
b
1