| Specification | Value |
|---|---|
| Engine Type | Liquid-cooled, 4-stroke, SOHC, 4-valve, Single Cylinder (Blue Core) |
| Model Code | CZD300-DA/25 |
| Engine Oil | SAE 10W-40 JASO MB (1.60 L) |
| Tire Size (Front/Rear) | 120/70-15 M/C 56P / 140/70-14 M/C 62P |
| Spark Plug | NGK LMAR8A-9 |
| Battery | GTZ8V / YTZ8V |
The Yamaha X-MAX 300 Tech MAX+ represents the pinnacle of the ‘Sport Scooter’ segment. A unique engineering highlight of the CZD300 series is its DiASil (Die-cast Aluminum Silicon) cylinder. Unlike traditional engines that use steel liners, the DiASil cylinder offers 3x better heat conductivity, which significantly reduces power loss due to friction and ensures consistent performance during long-distance touring.
Engineering Overview: Blue Core Philosophy
The heart of the CZD300-DA/25 is the Blue Core engine, designed to balance fuel efficiency with high-torque output. The Tech MAX+ variant distinguishes itself with a dual-display cockpit featuring a 4.2-inch full-color TFT infotainment system capable of Garmin navigation, paired with a separate 3.2-inch LCD speedometer. This integration requires a robust electrical system, supported by the high-cranking GTZ8V/YTZ8V battery.
Fluid & Lubrication Requirements
Maintaining the X-MAX 300 requires strict adherence to lubricant specifications. Unlike many motorcycles, the X-MAX uses a dry centrifugal clutch, allowing for the use of JASO MB friction-modified oils. Using JASO MA (wet clutch) oil won’t damage the engine, but JASO MB provides superior fuel economy and reduced internal drag for this specific powertrain.
- Oil Capacity: 1.60 Liters (Total)
- Viscosity: SAE 10W-40
- Classification: API SG or higher, JASO MB
Chassis & Handling: Tire Dynamics
The 15-inch front wheel provides motorcycle-like stability, while the 14-inch rear ensures ample under-seat storage. Proper inflation is critical for the traction control system (TCS) to function accurately. For solo riders, the rear should be maintained at 2.25 bar (33 psi), but this must be increased to 2.5 bar (36 psi) when carrying a pillion to prevent sidewall deformation.
Maintenance Schedule Checklist
- Spark Plug: Inspect every 6,000 km; replace every 12,000 km (NGK LMAR8A-9).
- Air Filter: Clean/Replace every 10,000 km (more frequently in dusty environments).
- V-Belt: Inspect for cracks every 10,000 km; replace every 20,000 km to prevent transmission failure.
- Brake Fluid: DOT 4 only; replace every 2 years regardless of mileage.
MotoSpecsLab Verdict
The CZD300-DA/25 is a masterclass in mid-capacity urban mobility. By following the precise specifications—particularly the 10W-40 JASO MB oil requirement and the specific NGK LMAR8A-9 long-reach plug—owners can ensure the longevity of the Blue Core engine and the sophisticated electronics suite that defines the Tech MAX+ experience.