Yamaha YZF-R6 99 Service Manual page 347

EB802405
4. Ignition spark gap
The following procedure applies to all of the
spark plugs.
S Disconnect the spark plug cap from the spark
plug.
S Connect the ignition checker
S
2 Spark plug cap
S Set the main switch to "ON".
S Measure the ignition spark gap
S Crank the engine by pushing the start switch
and gradually increase the spark gap until a
misfire occurs.
Min. ignition spark gap
6 mm
S Is there a spark and is the spark gap within
specification?
NO
as shown.
1
a
.
YES
The ignition system is
OK.
IGNITION SYSTEM
EB802409
6. Ignition coil resistance
The following procedure applies to all of the
ignition coils.
S Disconnect the ignition coil connectors from
the ignition coil terminals.
S Connect the pocket tester (
tion coil as shown.
Tester positive probe !
Tester negative probe !
S Measure the primary coil resistance.
Primary coil resistance
0.238 X 0.322
S Connect the pocket tester (
ignition coil as shown.
S Measure the secondary coil resistance.
Tester positive probe !
Tester positive probe !
Secondary coil resistance
8.16 X 11.04 k at 20_C
S Is the ignition coil OK?
YES
8-13
ELEC
1) to the igni-
ignition coil terminal
ignition coil terminal
at 20_C
1k) to the
ignition coil terminal
spark plug terminal
NO
Replace the ignition
coil.
1
2