This is an owner's manual for the Honda CBF300NA and CBF250NA motorcycles. It provides comprehensive information on vehicle safety, operation, maintenance, troubleshooting, and specifications.
Function Description:
The Honda CBF300NA and CBF250NA are motorcycles designed for safe and enjoyable riding. They feature a 6-speed manual transmission with a one-down, five-up shift pattern. The vehicles are equipped with an Anti-lock Brake System (ABS) to prevent wheel lock-up during hard braking, enhancing safety. An Inertia Measurement Unit (IMU) provides information for the ABS. The engine stop switch allows for emergency engine shutdown. The motorcycles also include a PGM-FI (Programmed Fuel Injection) system for efficient engine operation.
Important Technical Specifications:
- Engine:
- CBF300NA: 286 cm³ (17.4 cu-in) for GS, FO, U type; 286.01 cm³ (17.447 cu-in) for TH type.
- CBF250NA: 250 cm³ (15.3 cu-in).
- Bore x Stroke:
- CBF300NA: 76.0 x 63.0 mm (2.99 x 2.48 in) for GS, FO, U type; 76.000 x 63.043 mm (2.9921 x 2.4820 in) for TH type.
- CBF250NA: 76.0 x 55.0 mm (2.99 x 2.17 in).
- Compression Ratio: 10.7 : 1
- Fuel Type: Unleaded petrol, recommended 91 RON or higher.
- Fuel Containing Alcohol:
- GS, FO, MA, U type: ETHANOL up to 10% by volume.
- TH type: ETHANOL up to 20% by volume.
- Tank Capacity:
- GS, FO, MA, U type: 10.1 L (2.67 US gal, 2.22 Imp gal).
- TH type: 10.0 L (2.64 US gal, 2.20 Imp gal).
- Overall Length:
- GS, FO, MA, U type: 2,020 mm (79.5 in).
- TH type: 2,017 mm (79.4 in).
- Overall Width:
- GS, FO, MA, U type: 805 mm (31.7 in).
- TH type: 802 mm (31.6 in).
- Overall Height:
- GS, FO, MA, U type: 1,050 mm (41.3 in).
- TH type: 1,052 mm (41.4 in).
- Wheelbase:
- MA, GS, U type: 1,355 mm (53.3 in).
- FO type: 1,350 mm (53.1 in).
- TH type: 1,352 mm (53.2 in).
- Minimum Ground Clearance:
- GS, FO, MA, U type: 155 mm (6.1 in).
- TH type: 157 mm (6.2 in).
- Caster Angle:
- GS, FO, TH, U type: 24° 45´.
- MA type: 24° 44´.
- Trail:
- GS, FO, TH, U type: 94 mm (3.7 in).
- MA type: 93 mm (3.7 in).
- Curb Weight:
- GS, FO, MA, TH type: 144 kg (317 lb).
- U type: 143 kg (315 lb).
- Maximum Weight Capacity: 180 kg (397 lb) (including rider, passenger, all luggage, and accessories).
- Passenger Capacity: Rider and 1 passenger.
- Minimum Turning Radius: 2.3 m (7.5 ft).
- Battery: YTZ8V, 12 V-7 Ah (10 HR).
- Gear Ratios: 1st: 3.416, 2nd: 2.250, 3rd: 1.650, 4th: 1.350, 5th: 1.166, 6th: 1.038.
- Reduction Ratio (primary / final):
- GS, TH, MA, U type: 2.807 / 2.571.
- FO type: 2.807 / 2.642.
- Tyre Sizes: Front: 110/70R17M/C 54H, Rear: 150/60R17M/C 66H.
- Tyre Type: Radial, tubeless.
- Recommended Tyres: Front: DUNLOP GPR-300F M, Rear: DUNLOP GPR-300 M.
- Tyre Air Pressure (Driver only): Front: 200 kPa (2.00 kgf/cm², 29 psi), Rear: 225 kPa (2.25 kgf/cm², 33 psi).
- Tyre Air Pressure (Driver and passenger): Front: 200 kPa (2.00 kgf/cm², 29 psi), Rear: 225 kPa (2.25 kgf/cm², 33 psi).
- Minimum Tread Depth: Front: 1.5 mm (0.06 in), Rear: 2.0 mm (0.08 in).
- Spark Plug: SIMR8A9 (NGK).
- Spark Plug Gap: 0.80 - 0.90 mm (0.031 - 0.035 in).
- Idle Speed: 1,400 ± 100 rpm.
- Recommended Engine Oil: Honda 4-stroke motorcycle oil, API Service Classification SJ or higher, excluding oils marked as “Energy Conserving” or “Resource Conserving,” SAE 10W-30, JASO T 903 standard MA.
- Engine Oil Capacity: After draining: 1.4 L (1.5 US qt, 1.2 Imp qt); After draining & engine oil filter change: 1.5 L (1.6 US qt, 1.3 Imp qt); After disassembly: 1.8 L (1.9 US qt, 1.6 Imp qt).
- Recommended Brake Fluid: Honda DOT 3 or DOT 4 Brake Fluid.
- Cooling System Capacity: 0.79 L (0.83 US qt, 0.70 Imp qt).
- Recommended Coolant: GS, U type: Pro Honda HP Coolant; FO, MA, TH type: HONDA PRE-MIX COOLANT.
- Recommended Drive Chain Lubricant: Drive chain lubricant designed specifically for O-ring chains. If not available, use SAE 80 or 90 gear oil.
- Drive Chain Slack: 50 - 55 mm (2.0 - 2.2 in).
- Standard Drive Chain: DID 520VF2 or RK 520MOZX, 108 links.
- Standard Sprocket Size: Drive sprocket: 14T; Driven sprocket: GS, TH, MA, U type: 36T; FO type: 37T.
- Bulbs: All LED (Headlight, Brakelight/Taillight, Front turn signal/Position light, Rear turn signal, License plate light).
- Fuses: Main fuse: 30 A; Other fuses: 30 A, 20 A, 10 A, 7.5 A.
Usage Features:
- Instruments: The instrument panel includes a tachometer, speedometer, odometer, tripmeters (A/B), stopwatch, gear position indicator, fuel gauge, current fuel mileage, average fuel mileage, fuel consumption, and average speed.
- Display Settings: Users can adjust clock settings, backlight brightness, speed and mileage units, fuel mileage meter units, REV indicator settings (lighting RPM, lighting interval RPM, brightness), and tachometer display mode (conventional or peak hold).
- Indicators: The vehicle features indicators for ABS, high coolant temperature, PGM-FI malfunction (MIL), REV, neutral, high beam, turn signals, low fuel, and side stand.
- Switches: Headlight dimmer (high/low beam), horn, turn signal, passing light control, start button, engine stop switch, and ignition switch (On/Off/Lock).
- Starting the Engine: The manual provides a step-by-step procedure for starting the engine, including clutch lever operation for in-gear starts (GS, FO, MA, U type).
- Shifting Gears: The vehicle has a 6-forward gear transmission.
- Refuelling: Instructions for opening and closing the fuel fill cap are provided, along with safety warnings regarding handling petrol.
- Storage Equipment: Helmet holders are located under the rear seat, and a tool kit/document bag is stored below the rear seat.
Maintenance Features:
- Pre-ride Inspection: A list of items to check before each ride, including fuel level, throttle, engine oil level, coolant level, drive chain, brakes, lights, horn, engine stop switch, clutch, side stand ignition cut-off system (GS, FO, MA, U type), and wheels/tyres.
- Maintenance Schedule: A detailed schedule outlines routine and regular inspections and replacements for various components, with frequencies specified in kilometers/miles and years.
- Battery: Maintenance-free battery. Instructions for cleaning terminals are provided. Warnings about explosive hydrogen gas and proper disposal are included.
- Fuses: Instructions for inspecting and replacing blown fuses.
- Engine Oil: Regular checks and additions of recommended engine oil are advised. Guidelines for selecting engine oil (JASO T 903 MA, SAE 10W-30, API SJ or higher) are given.
- Brake Fluid: Instructions for checking brake fluid level. Warnings against adding or replacing brake fluid except in emergencies are included.
- Drive Chain: Regular inspection, cleaning, and lubrication are required. Drive chain slack adjustment is detailed.
- Coolant: Instructions for checking and adding coolant. Warnings about removing the radiator cap when the engine is hot are included.
- Tyres: Instructions for checking air pressure, inspecting for damage, and abnormal wear. Warnings about riding on excessively worn or improperly inflated tyres are given.
- Brake Pads: Instructions for inspecting front and rear brake pads for wear.
- Brakelight Switch: Instructions for adjusting the brakelight switch.
- Side Stand: Instructions for checking side stand operation and spring. For GS, FO, MA, U types, checking the side stand ignition cut-off system is included.
- Clutch: Instructions for checking and adjusting clutch lever freeplay (upper and lower adjustments).
- Throttle: Instructions for checking throttle operation and freeplay.
- Rear Suspension: Instructions for adjusting spring preload (GS, U type) and a recommendation to have a dealer service it for FO, MA, TH types. Warnings about damaging the shock absorber and high-pressure nitrogen gas are included.
- Body Components: Instructions for removing and installing the battery, clips, front seat, fuel tank cover assembly, rear seat, and left shroud.
- Caring for Your Vehicle: Guidelines for washing, washing precautions, care for aluminium components, and panels.
- Exhaust Pipe and Muffler: Cleaning instructions for stainless steel and painted exhaust components.
- Storing Your Vehicle: Guidelines for long-term storage, including cleaning, lubricating, lifting the vehicle, and battery removal/disconnection.
- Troubleshooting: Sections on engine not starting, overheating, warning indicators (PGM-FI, ABS, fuel gauge), tyre puncture, electrical trouble (battery dead, burned-out light bulb, blown fuse), and unstable engine operation.
- Environmental Responsibility: Advice on using sensible cleaners and recycling wastes.
Need help?
General
To Next Page