Yamaha FZR400 1988-1989 Service Manual page 309

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3. Spark plug
Check the spark type.
??
@Check the spark plug gap.
Refer to the "SPARK PLUG INSPECTION"
section in the CHAPTER 3.
Standard Spark Plug:
Spark Plug Gap:
0.7 - 0.8 mm (0.028 - 0.032 in)
4. Ignition spark gap
*Disconnect the spark plug cap from spark
@Connect the Dynamic Spark Tester @ as
shown.
the main switch to "ON".
Check the ignition spark gap.
??
misfire occurs.
Minimum Spark Gap:
6.0 mm (0.24 in)
CORRECT
OUT
OF
SPECIFICATION
OR NO SPARK
8-15
IGNITION SYSTEM IELECl liiiiil 1
INCORRECT
Repair or replace spark plug.
MEETS SPECIFICATION
Ignition system is good.
I
I

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