2002 Lexus GS 430 User Guide 1 - Page 103

E X P L A N AT I O N OF MAINTENANCE ITEMS M A I N T E N A N C E Engine Coolant Drain and flush the cooling system and refill with an ethylene-glycol type coolant. A qualified technician should perform this operation. Engine Oil and Oil Filter 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 or replace parts as necessary. Fuel Tank Cap Gasket Replace the oil filter and drain and refill the engine oil at specified intervals. For recommended oil grade and viscosity, refer to your Owner's Manual. Engine Valve Clearance Visually inspect for cracks, deterioration and damage and replace if necessary. Nuts and Bolts on Chassis and Body Inspect for excessive lifter noise and engine vibration and adjust if necessary. A qualified technician should perform this operation. Exhaust Pipes and Mountings Re-tighten the seat mounting bolts and front/rear suspension member retaining bolts to specified torque. Rack and Pinion Assembly Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration and damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace parts as necessary. Inspect the rack and pinion assembly or steering gear box for signs of leakage. If you discover any leakage, have it repaired immediately by a qualified technician. 103 M a i n t e n a n c e L o g s