3. INSPECTION/ADJUSTMENT
3-1
MXU 500
SERVICE INFORMATION
GENERAL
！ WARNING
xBefore 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.
xGasoline 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 : 3阡5 mm (0.12阡0.2 in)
Spark plug gap : 0.6阡0.7 mm (0.024阡0.028 in)
Spark plug: Standard: CR7E (NGK)
Valve clearance : IN: 0.1 mm (0.004 in)
EX: 0.1 mm (0.004 in)
Idle speed : 1500r100 rpm
Engine oil capacity
At disassembly : 3.6 liter (3.17 lmp qt, 3.82 Us qt)
At change : 3 liter (2.64 lmp qt, 3.18 Us qt)
After draining and oil filter cartridge change: 3.2 liter (2.82 lmp qt, 3.39 Us qt)
Front drive gear oil
Recommended oil: SAE 90
At disassembly: 300 cc (10.6 lmp oz, 10.1 Us oz)
At change: 300 cc (10.6 lmp qt, 10.1 Us qt)
Rear drive gear oil
Recommended oil: SAE 80
At disassembly: 150 cc (5.33 lmp oz, 5 Us oz)
At change: 130 cc (4.63 lmp qt, 4.33 Us qt)
Cylinder compression: 15 kg/cm² (1500 kPa, 213 psi)
Ignition timing: 5qr1q/1500 rpm
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