Yamaha FZS1000N, Service Manual

Page: 338 / 394

8-15
IGNITION SYSTEM
ELEC
NO YES
EAS00745
YES NO
EAS00747
1
a
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 dynamic spark tester 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
6.0 mm (0.24 in)
S
Is there a spark and is the spark gap within
specification?
The ignition system
is OK.
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
1k”) to the
spark plug cap as shown.
S
Measure the spark plug cap resistance.
Spark plug cap resistance
10 k
Ω
at 20
_
C (68
_
F)
S
Is the spark plug cap OK?
Replace the spark
plug cap.
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
1) to the
ignition coil as shown.
Positive tester probe
!
red / black
Negative tester probe
!
orange (gray)
S
Measure the primary coil resistance.
Primary coil resistance
1.87
X
2.53
Ω
at 20
_
C (68
_
F)
S
Connect the pocket tester (
Ω
1k) to the
ignition coil as shown.
Posltlve tester probe
!
spark plug lead
Negative tester probe
!
spark plug lead
S
Measure the secondary coil resistance.
EAS00743