3. INSPECTION/ADJUSTMENT MXU 500 IRS SERVICE INFORMATION GENERAL WARNING ·Before running the engine, make sure that the working area is well-ventilated. Never run the engine in a closed area. The exhaust contains poisonous carbon monoxide gas which may cause death to people. ·Gasoline is extremely flammable and is explosive under some conditions. The working area must be well-ventilated and do not smoke or allow flames or sparks near the working area or fuel storage area. SPECIFICATIONS Throttle grip free play : 35 mm Spark plug gap : 0.60.7 mm Spark plug: Standard : CR7E (NGK) Valve clearance : IN: 0.1 mm EX: 0.1 mm Idle speed : 1500100 rpm Engine oil capacity At disassembly : 3.6 liter At change : 3.0 liter Front drive gear oil Recommended oil: SAE 80 At disassembly: 270 cc At change: 250 cc Rear drive gear oil Recommended oil: SAE 80 At disassembly: 250 cc At change: 230 cc Cylinder compression: 15 kg/cm Ignition timing: 5°/IDLE 3-1