Checking The Spark Plug Caps; Removing The Spark Plug Caps; Installing The Spark Plug Caps - Yamaha 25BMH Service Manual

– +
ELEC
1
1
IGNITION SYSTEM
2
(4) Crank the engine and observe the spark
through the discharge window of the
ignition tester.
NOTE:
• If there is no spark or the spark is weak,
check spark plug cap, ignition coil,
pulser coil, charge coil and CDI unit.
• If a good spark is obtained, the problem
is not with the ignition system, but pos-
sibly with the spark plug(s) or another
component.

CHECKING THE SPARK PLUG CAPS

Check:
• Spark plug cap
Crack/damage → Replace.

REMOVING THE SPARK PLUG CAPS

Removing steps
(1) Remove the spark plug cap
ing the cap.

INSTALLING THE SPARK PLUG CAPS

Installing steps
(1) Install the spark plug cap
tension cable
NOTE:
Avoid removing the plug cap by pulling the
high-tension cable hard. Remove it by turn-
ing in and out.
8-6
1
1
by turn-
1
to the high-
2
by turning the cap.
E