🟦 Engine & Performance

• Engine Type: Liquid-cooled, 4-stroke, SOHC, 4-valve (VVA)

• Displacement: 155cc

• Max Power: 11.3 kW (15.4 PS) @ 8,000 RPM

• Max Torque: 13.9 Nm (1.4 kgf-m) @ 6,500 RPM

• Compression Ratio: 11.6 : 1

• VVA Activation: 6,000 RPM

• Transmission: V-Belt Automatic (CVT)

🛢️ Fluids & Capacities

• Engine Oil: 0.90 L (0.80 L for periodic change)

• Recommended Oil: 10W-40 (Yamalube Full Synthetic)

• Final Gear Oil: 0.15 L (0.10 L for periodic change)

• Coolant Capacity: 0.46 L

• Fuel Tank Capacity: 5.5 Litres

⚡ Electrical & Ignition

• Spark Plug: NGK / CPR8EA-9

• Spark Plug Gap: 0.8–0.9 mm

• Battery: YTZ7V (12V, 6.0Ah)

• Headlight: LED (High/Low)

🛞 Chassis & Tyres

• Front Tyre: 110/80-14M/C 53P (Tubeless)

• Rear Tyre: 140/70-14M/C 62P (Tubeless)

• Front Tyre Pressure: 29 psi (200 kPa)

• Rear Tyre Pressure: 33 psi (225 kPa)

• Front Brake: 230mm Hydraulic Disc (Single Channel ABS)

• Rear Brake: 130mm Mechanical Drum

V-Belt Case Filter: V-belt case air filter element cleaning interval (usually every 12,000 km).

Valve Clearances: This is a high-intent search for DIY mechanics.

• Intake: 0.10–0.14 mm

• Exhaust: 0.21–0.25 mm

Tightening Torques: Add a small table for "Common DIY Torques":

• Oil Drain Bolt: 20 Nm (2.0 m·kgf)

• Rear Axle Nut: 125 Nm (12.5 m·kgf)

• Spark Plug: 13 Nm (1.3 m·kgf)

At what RPM does the VVA (Variable Valve Actuation) kick in? The VVA system is designed to activate at a specific point in the rev range to switch cam profiles. Knowing this "engagement zone" is critical for tuning your CVT weights. We provide a full RPM-to-Roller Weight compatibility chart in our CVT Masterclass chapter.

How do I fix the "Error 12" starting issue? Error 12 is a notorious fault caused by a failure in the stator-to-ECU connection. While many shops suggest replacing the entire stator, there is a community-proven "permanent fix" that involves bypassing the factory connector. Our guide includes a step-by-step wiring diagram to fix this for good without buying a new stator.

What are the factory valve clearance specifications? Proper valve clearances are vital for the Blue Core engine’s longevity. These must be set strictly within factory tolerances while the engine is cold to avoid power loss or "ticking." Find the exact Intake and Exhaust tolerances for the V1, V2, and 155cc VVA engines in the Technical Data section of the Bible.

What tire pressures provide the best balance of grip and fuel economy? Running incorrect pressures on the Aerox's 14-inch wheels can lead to premature wear and poor handling. The Survival Bible includes a 'Pro-Tuning' pressure guide for solo riding vs. carrying a pillion passenger.

Why is my battery draining when the bike is parked? Many modern Aerox models suffer from parasitic drain due to the onboard communication modules. If your bike won't start after 3 days of sitting, you likely have this common "Gremlin." We show you exactly which module to safely disconnect to save your battery life in the Electrical Troubleshooting chapter.

Where can I find the correct tightening torques for DIY service? Using the wrong torque on the oil drain bolt or rear axle can lead to stripped threads or wheel failure. The Bible includes a complete 'Common DIY Torques' table, covering everything from spark plugs to critical chassis bolts.

How often does the CVT system need servicing? While the manual gives a general interval for the V-belt filter, performance drops off much sooner in dusty or humid climates. Our 10-point inspection list tells you exactly what signs of wear to look for before a belt snaps.