1995 Lexus LS400 spark plugs replace

MAINTENANCE
184SCHEDULE A
Maintenance operations:
A = Check and adjust as necessary; I = Inspect and correct or replace as necessary; R = Replace, change or lubricate.
Service interval
(Use odometer reading or
months. whichever comes first.)Maintenance services beyond 96,000 km (60,000 miles) should continue to be performed at the same intervals shown for each maintenance schedule.Km x 1,0001.66121824303642485460667278849096MonthsMiles x 1,00013.757.511.251518.7522.526.253033.7537.541.254548.7552.556.2560ENGINE COMPONENTS AND EMISSION CONTROL SYSTEMSTiming beltSee note (1)Valve clearanceAA: Every 72 monthsDrive belt See notes (2)II: See note (2)Engine oil and oil filterRRRRRRRRRRRRRRRRR: Every 6 monthsEngine coolant See note (3)RR: See note (3)Exhaust pipes and mountingsIIIII: Every 24 months
Air cleaner filterSee note (4)IIIIIIIRIIIIIIIRI: Every 6 months
R: Every 36 months
Fuel lines and connections See note (5)III: Every 36 monthsFuel tank cap gasketRR: Every 72 monthsSpark plugsRR: Every 72 monthsCharcoal canister See note (6)II: Every 72 months
Maintenance services indicated by a star () or asterisk () are required under the terms of the Emission Control Systems Warranty. See Owner’s Guide or Warranty
Booklet for complete warranty information.
 For vehicles sold in California, Massachusetts, New York, New Jersey. Connecticut, Pennsylvania, Vermont, Rhode Island and New Hampshire only
 For vehicles sold outside California, Massachusetts, New York. New Jersey, Connecticut, Pennsylvania. Vermont, Rhode Island and New Hampshire
NOTE:
(1) If you operate your vehicle under conditions of extensive idling and / or low speed driving for a long distance such as police, taxi or door to door delivery use, replace
every 96,000 km (60,000 miles). If not applicable, follow schedule B.
(2) After 96,000 km (60,000 miles) or 72 month, inspect every 12,000 kin (7,500 miles) or 12 months.
(3) After 72,000 kin (45.000 miles) or 36 months, replace every 48,000 km (30,000 miles) or 24 months.
(4) Applicable when operating mainly on dusty road. It not applicable, follow schedule B.
(5) Includes inspection of vapor vent system.
(6) Non−maintenance item except for California, Massachusetts, New York. New Jersey, Connecticut. Pennsylvania, Vermont, Rhode Island and New Hampshire.

MAINTENANCE
186SCHEDULE B
Maintenance operations:
A = Check and adjust as necessary; I = Inspect and correct or replace as necessary; R = Replace, change or lubricate.
Service interval
(Use odometer reading or
months, Whichever comes first.)Maintenance services beyond 96,000 km (60,000 miles) should continue to be performed at the same intervals shown for each maintenance schedule.km x 1,0001.61224364860728496MonthsMiles x 1,00017.51522.53037.54552.560ENGINE COMPONENTS AND EMISSION CONTROL SYSTEMSTiming beltReplace every 150,000 km (90,000 miles).Valve clearanceAA: Every 72 monthsDrive belt Sec note (1)II: See note (1)Engine oil and oil filterRRRRRRRRR: Every 12 monthsEngine coolant See note (2)RR: See note (2)Exhaust pipes and mountingsIII: Every 36 monthsAir cleaner filterRRR: Every 36 monthsFuel lines and connections See note (3)III: Every 36 monthsFuel tank cap gasketRR: Every 72 monthsSpark plugsRR: Every 72 monthsCharcoal Canister See note (4)Il: Every 72 months
Maintenance services indicated by a star () or asterisk () are required under the terms of the Emission Control Systems Warranty. See Owner’s Guide or Warranty
Booklet for complete warranty information.
 For vehicles sold in California. Massachusetts, New York. New Jersey, Connecticut, Pennsylvania, Vermont, Rhode Island and New Hampshire only
 For vehicles sold outside California, Massachusetts. New York, New Jersey, Connecticut. Pennsylvania, Vermont, Rhode Island and New Hampshire
NOTE:
(1) After 96,000 km (60,000 miles) or 72 months, inspect every 12,000 km (75,000 miles) or 12 months.
(2) After 72,000 km (115,000 miles) or 36 months, replace every 48,000 km (30,000 miles) or 24 months.
(3) Includes inspection of vapor vent system.
(4) Non−maintenance item except for California, Massachusetts, New York, New Jersey, Connecticut, Pennsylvania, Vermont, Rhode Island and New Hampshire.

MAINTENANCE
188
Explanation of scheduled maintenance items
ENGINE COMPONENTS AND EMISSION CONTROL
SYSTEMS
Timing belt
When scheduled, replace the belt. A qualified technician
should perform these operations.
Valve clearance
Adjust the valve clearances to factory specifications. A
qualified technician should perform this operation.
Drive belt
Inspect the drive belt for cracks, excessive wear or oiliness.
Replace the belt if damaged. Check the auto−tensioner
operation.
Engine oil and oil filter
Change the engine oil and oil filter when scheduled. Use API
SH, Energy−Conserving 11 multigrade engine oil or ILSAC
multigrade engine oil. For recommended viscosity, see page
204. A qualified technician should perform this operation.
Engine coolant
Drain and flush the cooling system when scheduled. Refill only
with an ethylene−glycol type coolant. A qualified technician
should perform this operation.Exhaust pipes and mountings
Visually inspect the exhaust pipes, muffler and hangers for
cracks, deterioration, or damage. Start the engine and listen
carefully for any exhaust gas leakage. Tighten connections or
replace parts as necessary.
Air cleaner filter
Replace the air cleaner filter when scheduled. If you mainly
operate your vehicle on dusty roads, additionally inspect and
clean the air cleaner filter when scheduled. Visually check for
dirt or damage. It may be cleaned with compressed air.
Fuel lines and connections
Visually inspect the lines, connections for corrosion, damage,
cracks, and loose or leaking connections. Tighten connections
or replace parts as necessary.
Fuel tank cap gasket
Make sure the new gasket is correctly installed.
Spark plugs
Install new plugs of the same type as originally equipped. A
qualified technician should perform this operation.
Charcoal canister
Inspect for internal damage or clogging. Clean with
compressed air or replace if necessary. A qualified technician
should perform this operation.