Spark Plug; Spark Plug Cap - Yamaha 40V Service Manual

– +
ELEC
IGNITION SYSTEM
3. Measure:
Pulser coil output (test #3)
Beyond specification → Replace CDI
unit.
Below specification → Replace pulser
coil.
Pulser coil output:
3.0 V @ cranking
9.0 V @ 1,500 r/min
15.0 V @ 3,500 r/min
Measuring steps:
Disconnect the pulse coil couple. Con-
nect the 3 pins test harness.
3 pins test harness:
YB-06443, 90890-06757
Connect the tester to the measurement
terminal.
Set the tester dial to specification.
Range:
—
. ......
V
Crank or start the engine.

SPARK PLUG

Refer to "GENERAL" in chapter 3.

SPARK PLUG CAP

1. Inspect:
Spark plug cap
Loosen → Tighten.
Crack/Damage → Replace.
2. Measure: (For Canada and Europe)
Spark plug cap resistance
Out of specification → Replace.
Spark plug cap resistance:
4.0 ~ 6.0 kΩ
8-12
E