MAINTENANCE 11 Retighten Cylinder Head Bolt --- As required See your authorized dealer. 12 Inspect and Adjust Valve Clearance --- every 1 000 hours See your authorized dealer. 13 Check Fuel Injection Timing --- As required See your authorized dealer. 14 Measure Engine Compression Pressure --- every 1 000 hours See your authorized dealer. 15 Check Starter and Alternator --- every 1 000 hours See your authorized dealer. 16 Check Water Pump --- every 4 000 hours See your authorized dealer. 7-90