| Parameter | Value | |-----------|-------| | Bore × stroke | 40 mm × 39.3 mm | | Compression ratio | 7.2:1 (uncorrected) | | Max power | 3.6 kW (4.8 hp) @ 7500 rpm | | Max torque | 4.9 N·m @ 6500 rpm | | Carburetor | Keihin PB (16 mm venturi) | | Main jet | #78 (stock) | | Pilot jet | #35 | | Spark plug | NGK BR8HSA or BR9HSA (cold) | | Spark plug gap | 0.6–0.7 mm | | Oil pump adjustment | 2T oil: 1.0–1.2 mm mark alignment | | Idle speed | 1800 ± 100 rpm |

Since the X8R is a 2-stroke machine, it has different service needs than modern 4-stroke scooters. Scooter Maintenance Schedule: What to Service & When

The Honda X8R series (including the X8R-S "Super Sport" and X8R-X "Cross Sport") represents a high-tech era of 2-stroke 50cc scooters produced between . Featuring a unique aluminum monocoque frame and dual disc brakes, these machines require specific maintenance routines to stay reliable. Honda X8R Technical Specifications

| Component | Spec | |-----------|------| | Ignition timing (CDI) | 18° BTDC @ 2000 rpm (non-adjustable) | | Charging coil resistance (stator) | 100–400 Ω (black/red – ground) | | Pickup coil resistance | 50–200 Ω (blue/yellow – green) | | Headlight | 12V 35/35W (HS1) | | Battery | 12V 4Ah (YTX4L-BS) | | Regulator/rectifier | Short-circuit type |