2006 LEXUS LX470 spark plugs

INTRODUCTION
397
DOITYOURSELF SERVICEPRECAUTIONS
If you perform maintenance yourself, be sure to follow the
correct procedure given in this Section.
You should be aware that improper or incomplete servicing
may result in operating problems.
Performing do −it−yourself maintenance during the warranty
period may affect your warranty coverage. Read the separate
Lexus Warranty statement for details and suggestions.
This Section gives instructions only for those items that are
relatively easy for an owner to perform. As explained in
Section 5, there are still a number of items that must be
performed by a qualified technician with special tools.
For information on tools and parts for do −it −yourself
maintenance, see “Parts and tools” on page 398.
Utmost care should be taken when working on your vehicle to
prevent accidental injury. Here are a few precautions that you
should be especially careful to observe:
CAUTION
 When the engine is running, keep hands, clothing,
and tools away from the moving fan and engine drive
belt. (Removing rings, watches, and ties is
advisable.)
 Right after driving, the engine compartment the
engine, radiator, exhaust manifold and power
steering fluid reservoir and spark plug boots, etc.
will be hot. So be careful not to touch them. Oil, other
fluids and spark plugs may also be hot.
 If the engine is hot, do not remove the radiator cap or
loosen the drain plugs to prevent burning yourself.
 Do not smoke, cause sparks or allow open flames
around fuel or the battery. Their fumes are
flammable.
 Do not get under your vehicle with just the body jack
supporting it. Always use automotive jack stands or
other solid supports.
 Use eye protection whenever you work on or under
your vehicle where you may be exposed to flying or
falling material, fluid spray, etc.
 Be extremely cautious when working on the battery.
It contains poisonous and corrosive sulfuric acid.

SECTION 6 – 2
401
SERVICE PROCEDURES AND
SPECIFICATIONS
Engine
Specifications402
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Fuel 405
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Fuel pump shut off system 407
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facts about engine oil consumption 408
. . . . . . . . . . . . . . . . . . . . . . . .
Used engine oil 409
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. . . . .
Checking the engine oil level 410
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the engine coolant level 413
. . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the radiator and condenser 414
. . . . . . . . . . . . . . . . . . . . . . .
Spark plugs 415
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ENGINE
415
SPARK PLUGS
62R031c
Your engine is fitted with iridiumtipped spark plugs.
NOTICE
Use only iridiumtipped spark plug. Do not adjust gaps
for engine performance or smooth drivability.