2007 Lexus IS 250 Scheduled Maintenance Guide - Page 30

E X P L A N AT I O N OF MAINTENANCE ITEMS Engine Valve Clearance (GS 430, SC) Inspect for excessive lifter noise and engine vibration and adjust if necessary. (All other models are equipped with hydraulic valve lash adjusters that require no periodic clearance inspection or adjustment.) Exhaust Pipes and Mountings Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration and damage. Start the engine and listen carefully for any exhaust leakage. Tighten connections and replace parts as necessary. Fuel Lines and Connections, Fuel Tank Band and Fuel Tank Vapor Vent System Hoses Visually inspect for corrosion, damage, cracks, and loose or leaking connections. Tighten connections and replace parts as necessary. sion-member retaining bolts matches torque measurements specified in the Repair Manual. Power Steering Fluid When inspecting, visually check the power steering fluid level on the seethrough reservoir. Add fluid as necessary. For fluid specifications, refer to your Owner's Manual. Rack and Pinion Assembly Inspect the rack and pinion assembly for signs of leakage, damage and loose electrical connections. Tighten connections and if you discover any leakage or damage, have it repaired immediately by a qualified technician. Road Test While driving the vehicle, check for proper operation of engine, transmission, brakes and steering. Also check for abnormal noise or vibration from any part of the vehicle. Spark Plugs Replace at specified interval. A qualified technician should perform this operation. To ensure optimum engine performance on ES 350, replace only with Denso FK20HR11 plugs or equivalent. MAINTENANCE 68 Fuel Tank Cap Gasket Visually inspect for cracks, deterioration and damage and replace if necessary. Nuts and Bolts on Chassis Check that tightness of the seatmounting bolts and front/rear suspen- Scheduled Maintenance Log