3. INSPECTION/ADJUSTMENT ATV 50 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 ENGINE Throttle grip free play : 14 mm (0.04 - 0.16 in) Spark plug gap : 0.60.7 mm (0.024 0.028 in) Spark plug: Standard : NGK: BR8HAS Idle speed : 1800100rpm Gear oil capacity (MXU 50/MX'ER 50): At disassembly : 0.12 liter (0.11 lmp qt, 0.13 Us qt) At change : 0.09 liter (0.08 lmp qt, 0.1 Us qt) Gear oil capacity (MXU 50 REVERSE): At disassembly : 0.3 liter (0.26 lmp qt, 0.32 Us qt) At change : 0.25 liter (0.22 lmp qt, 0.26 Us qt) Cylinder compression: 1200 kPa (12 kgf/cm,170 psi) Ignition timing: MXU 50/MX'ER 50: BTDC 22°/2000rpm MXU 50 REVERSE: BTDC 13.5°/1500rpm CHASSIS Front brake free play: 1020 mm (0.4 0.8 in) Rear brake free play: 1020 mm (0.4 0.8 in) TIRE PRESSURE MX'ER 50 (1 Rider) MXU 50 REVERSEMXU 50 (1 Rider) Front 33 kPa (0.33 kgf/cm, 4.7 psi) 28 kPa (0.28 kgf/cm, 3.9 psi) Rear 33 kPa (0.33 kgf/cm, 4.7 psi) 28 kPa (0.28 kgf/cm, 3.9 psi) TIRE SIZE: MX'ER 50: Front: 20*7-8 Rear : 22*10-8 MXU 50 REVERSE/MXU 50 Front: 21*7-10 Rear : 22*10-10 3-1