Spark Plugs - BRP Johnson J30TEL4SUA 2007 Service Manual

SPARK PLUGS

CAUTION
Only use resistor (R) type spark plugs with
this engine. Using a non-resistor spark
plug will cause ignition system malfunc-
tions.
Standard spark plug: NGK DCPR6E
Remove the spark plug.
1. Spark plug
Check the electrode. If it is extremely worn or
burnt, replace the spark plug. Also, replace the
spark plug if it has a broken insulator or damaged
threads.
Check for carbon deposits on the spark plug
bases. If carbon is present, remove it with a spark
plug cleaning machine or by carefully using a
pointed tool.
Use a thickness gauge to measure the spark plug
gap. The correct gap is 0.031 to 0.035 in. (0.8 to
0.9 mm).
If the gap is out of specification, adjust it within the
specified range.
1
1. Spark plug gap
Confirm the thread size and reach when
replacing the spark plug. If the reach is too
short, carbon will be deposited on the
001319
threaded portion of the plug hole, result-
ing in possible engine damage.
During installation, tighten the spark plug to a
torque of 160 in. lbs. (18 N·m).
Before installing the spark plug lead cover on the
spark plug, apply a light coating of Electrical
Grease to the ribbed portion of the spark plug
ceramic and to the opening of the spark plug
cover. This will help prevent corrosion between
the spring terminal and the spark plug which can
cause high tension arcing.
001320
MAINTENANCE
SPARK PLUGS
CAUTION
3
1
001322
67