Spark Plug - Baja motorsports Phoenix 250 Owner's Manual

Spark Plug

Spark Plug recommendation
Do not use any spark plug other than the one recommended in
the heat recommended.
Standard spark plug ATTC
NOTICE:
If you use a spark plug in the improper heat range you can cause
engine damage.
Spark Plug Replacement:
1) Clean any/all dirt around the spark plug base.
2) Disconnect the spark plug caps and make certain you do not
damage the wires.
3) Remove the spark plug using the spark plug wrench provided
in the tool kit.
4) Inspect the electrodes on the spark plug for corrosion and
deposits, if it has great corrosion replace the plug.
5) Using a wire-type feeler, check the gap on every new spark
plug. If an adjustment is needed, bend the electrode carefully, the
gap should be: 0.024-0.028in (0.60-0.70mm).
6) Thread spark plug in by hand so there is no cross-threading.
7) Tighten, old but still good, spark plug: 1/8-1/4 turn after it
seats. Tighten new spark plug: 1/2 turn after it seats.
8) Reinstall the spark plug caps.
Electrode
↓
Spark plug gap
↓
NOTICE:
Incorrect tightening of the spark plug
can cause severe damage to the engine.
Too loose can damage piston, too tight
can damage the threads.