Yamaha FZ6-ST Supplementary Service Manual page 415

EAS00743
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
plug cap 2 as shown.
S Set the main switch to "ON".
S Measure the ignition spark gap
S Crank the engine by pushing the starter
switch and gradually increase the spark gap
until a misfire occurs.
Minimum ignition spark gap
6 mm (0.24 in)
S Is there a spark and is the spark gap within
specification?
NO
EAS00745
5. Spark plug cap resistance
The following procedure applies to all of the
spark plug caps.
S Remove the spark plug cap from the spark
plug lead.
S Connect the pocket tester (Ω
spark plug cap as shown.
S Measure the spark plug cap resistance.
1
and spark
a
.
YES
The ignition system
is OK.
1k) to the
8-10
IGNITION SYSTEM
Spark plug cap resistance
10 kΩ at 20_C (68_F)
S Is the spark plug cap OK?
YES
EAS00747
6. Ignition coil resistance
The following procedure applies to all of the
ignition coils.
S Disconnect the ignition coil leads from the
wire harness.
S Connect the pocket tester (Ω
ignition coil as shown.
Positive tester probe ! red/black
Negative tester probe !
orange/black (gray/black)
S Measure the primary coil resistance.
Primary coil resistance
1.53 X 2.07 Ω at 20_C (68_F)
S Connect the pocket tester (Ω
ignition coil as shown.
ELEC
NO
Replace the spark
plug cap.
1) to the
1k) to the