ON-THE-JOB TRAINING/EVALUATION GUIDE
TEST ID# 00000000000110-SP
PAGE 1 OF 7
(1) TASK #:
AVG. TIME TO PERFORM
REPLACING SPARK PLUGS
The evaluator will randomly select a minimum of 6 questions from the following for each performance
evaluation. Questions 1 and 5 must be asked on each evaluation.
CRITICAL CONTENT FOR
State the safety precautions associated
Follow all CER safety precautions and be alert for any pinch
with replacing a spark plug.
points and sharp edges.
How is the boot removed?
Twist gently off the plug.
Why is dirt removed from around spark
To prevent dirt from falling in the hole thus into the cylinder
plug prior to removing it.
which could lead to engine damage.
What direction is the spark plug turned
to remove it?
How do you determine if the spark plug
Refer to the Spark Plug Condition Guide pages 4 & 5 of the
needs replaced or not?
How do you adjust the gap of a spark
Bend the side electrode (never the center electrode) with the
Which direction is the spark plug
turned to install it?
How tight do you install a plug?
1/4 turn past finger tight.