76
MAINTENANCE
SPARK PLUGS
SPARK PLUGS
Spark plugs should be removed and examined
periodically. Replace worn, fouled or damaged
spark plugs.
Use only recommended spark plugs with the cor-
rect gap setting.
•
Remove spark plugs and inspect condition.
•
Set spark plug gap on new, replacement spark
plugs.
•
Mark spark plugs for ground electrode orienta-
tion.
•
Apply
Electrical Grease
to the ribbed portion of
the spark plug ceramic and to the opening of
the spark plug cover to prevent corrosion.
•
Install spark plugs using “indexing” procedure.
Removal
Remove ignition coil above spark plug to gain
access. When reinstalling coils, tighten screws to
a torque of 60 to 84 in. lbs. (7 to 9.5 N·m).
Indexing
Spark plug indexing positions the ground elec-
trode of the spark plug opposite the fuel injector
nozzle.
Put an ink mark on the ceramic of the spark plug
in line with the OPEN side of the ground elec-
trode. This mark will be used to orient the spark
plug with the OPEN side of the ground electrode
facing the fuel injector.
Apply
Triple-Guard
grease to the gasket surface
of the spark plug. Install spark plug and tighten to
a torque of 15 ft. lbs. (20 N·m).
If the mark is in unshaded area do not tighten any-
more.
If the mark is in the shaded area, reset torque
wrench to 30 ft. lbs. (41 N·m) and continue to turn
until the mark is in the unshaded area.
If the mark does not reach the unshaded area
before the torque of 30 ft. lbs. (41 N·m) is reached,
the spark plug cannot be indexed for that cylinder.
Try another spark plug and repeat the steps
above.
Spark Plug,
Champion
QC10WEP @ 0.028 ± 0.003 in. (0.71 mm)
006521
1.
Ink mark
2.
Open side
000758
Spark Plug Indexing Diagram
1.
Unshaded area
2.
Shaded area
002106
1
2
2
1
Содержание E-TEC E40DPLSCB
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Страница 300: ...298 GEARCASE NOTES NOTES Technician s Notes Related Documents Bulletins Instruction Sheets Other...
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