Yamaha SR125 1997 Service Manual page 202

YP*****
2. Ignition spark gap
S Disconnect the spark plug cap from the
spark plug.
S Connect the ignition checker
2 Spark plug cap
S Turn the main switch to "ON".
S Check the ignition spark gap
S Check the spark by pushing the starter
switch, and increase the spark gap until a
misfire occurs.
Minimum spark gap:
6 mm
YP*****
3. Spark plug cap resistance
S Remove the spark plug cap.
S Connect the pocket tester (Ω
spark plug cap.
NOTE:
S When removing the spark plug cap, do not
pull the spark plug cap from high tension
cord.
Remove ! Turning counterclockwise.
Connect ! Turning clockwise.
S Check the high tension cord when connect-
ing the spark plug cap.
S When connecting the spark plug cap, cut the
high tension cord about 5 mm.
Spark plug cap resistance:
10 kΩ (20_C)
:
1 as shown.
a
.
OUT OF SPECIFICA-
TION OR NO SPARK
1k) to the
MEETS
SPECIFICATION
:
IGNITION SYSTEM
MEETS SPECIFICATION
The ignition system is not faulty.
Tester (+) lead !
Spark plug side
Tester (–) lead !
High tension cord side
OUT OF SPECIFICATION
Replace the spark plug cap.
7-6
ELEC
1
2