HONDA CBX250 CBX 250 Bike Workshop Service Repair Manual

15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 16 17 18 19 20 21 How to Use This MANUAL In this Manual of Shop the technical characterist- ics and the procedures of service are described for the motorcycle CBX250. To guarantee perfect conditions of operation of the vehicle, follow the recommendations of the Chart of Maintenance (Section 3). The real- isation of the first programmed maintenance is extremely important, since he/she will go to compensate the initial waste that happens during the period of it relents. The Sections 1 and 3 are applicable to the whole motorcycle. The Section 2 present procedures of dis-assembly / installation of components that can be necessary to make the services described in the following sections. GENERAL INFORMATION CHASSIS/FAIRING/EXHAUST SYSTEM MAINTENANCE LUBRICATION SYSTEM FUEL SYSTEM DISMANTLING/ ENGINE INSTALLATION CYLINDER HEAD/VALVES PISTON/CYLINDER CLUTCH/GEAR SELECTOR ALTERNATOR/ CLUTCH START TRANSMISSION CRANKSHAFT/FLYWHEEL FRONT WHEEL/ SUSPENSION/STEERING REAR WHEEL/SUSPENSION HYDRAULIC BRAKE BATTERY/LOADING SYSTEM IGNITION SYSTEM SYSTEM OF ELECTRIC STARTER LIGHTS/INSTRUMENTS/ SWITCHES WIRING DIAGRAM FAULT FINDING GENERAL INDEX ELECRICAL SYSTEM CHASSIS ENGINE AND TRANSMISSION

GENERAL INFORMATION 2 CBX250 SYMBOLS The symbols used in this manual indicated procedures of service. The additional information relating to those symbols will be explained specifically in the text, without the use of the same. Replace(s) piece(s) by a new before mounting. Use the motor oil recommended, unless otherwise specified another. Use the recommended solution of oil of molybdenum (mixture of motor oil and grease of molybdenum, in a ratio of 1:1). Use grease multipurpose (grease multi-function on the basis of lithium NGLI No. 2 Or equivalent). Use grease of carbon disulphide molybdenum (containing more than 3 percent of carbon disulphide of molybdenum, LITHIUM No. 2 Or equivalent). Use pulp on the basis of carbon disulphide molybdenum (containing more than 40 percent of carbon disulphide of molybdenum, LITHIUM No. 2 Or equivalent). Use grease silicone-based. Apply firming agent (locks chemistry) with resistance to the average torque, unless otherwise specified another. Apply liquid sealed (sealer). Use of fluid brake DOT 4. Use the fluid brake recommended, unless otherwise specified another. Use fluid to fork or suspension. M PM S ATF ACEITE Mo NUEVA GRASA ACEITE SELLADO TRABA FRENO

1. GENERAL INFORMATION SAFETY STANDARDS 1-1 SERVICE STANDARDS 1-2 IDENTIFICATION OF THE MODEL 1-3 SPECIFICATIONS 1-4 VALUES OF TIGHTENING torque 1-13 Gear, outfit, kit LUBRICATION POINTS AND SEALS 1-16 CABLES AND WIRING 1-18 SYSTEMS OF CONTROL OF EMISSION 1-24 CBX250 CARBON MONOXIDE In case of that is necessary to make some service with the engine running, make sure that the local is well ventilated. Never put the engine running in local closed. d Run the engine in an open area. In the event that is necessary to operate in a local closed, make sure that this present a system extractor of exhaust gases. PETROL (gasoline) to work in a local well ventilated. Do not smoke. Avoid llamas or sparks in the area of work, or where the petrol (gasoline) is stored. d HOT Components d USED MOTOR OIL d ASBESTOS Never use a air hose or a dry brush to clean up the sets of brake. Use only a device for cleaning approved or an alternative method specially developed with the aim of reducing the damage caused by asbestos fibers. d BRAKE FLUID i ELECTROLYTE AND HYDROGEN GAS FROM THE BATTERY d •The battery produces explosive gases. Keep away from sparks and lit cigarettes. Provide adequate ventilation to the reload or use the battery in a local closed. •Battery contains sulphuric acid (electrolyte). If comes into contact with the skin or eyes may cause serious burns. Use protective clothing and protective mask. In the event that the electrolyte comes into contact with the skin, wash with plenty of water. In the event that the electrolyte comes into contact with the eyes, wash with water for at least 15 minutes and search medical relief immediately. • Electrolyte is poisonous. In case of ingestion drink a large amount of water or milk. Then drink milk of mag- nesia or vegetable oil and search medical relief immediately. Keep out of the reach of children. The shedding of fluid brake on pieces painted, of plastic or rubber can cause damage. Place a cloth on these pieces always perform services in the system. Keep out of the reach of children. The inhalation of asbestos fibers can cause damage to the respiratory system and cancer. The used motor oil can cause skin cancer if comes into contact with the same during a long period. Although it is not likely to happen, unless it is handled used oil daily, it is advisable wash their hands with soap and water after manipulate it. Keep out of the reach of children. The engine parts and exhaust system are heated too and thus remain for some time, even after the engine has ceased to function. Wear gloves with thermal insulation or wait until the engine and the exhaust system have been cooled, before handling these parts. The petrol (gasoline) is extremely flammable and explosive under certain conditions. Keep out of the reach of children. The exhaust containing carbon monoxide poison, which can cause loss of consciousness and even death. SAFETY STANDARDS

GENERAL INFORMATION 1-2 CBX250 SERVICE STANDARDS 1. Use only spare parts, oils and lubricants genuine HONDA or recommended by HONDA or their equivalents. The spare parts that do not respond to the specifications of HONDA can damage the motorcycle. 2. Use the tools specially designed for this vehicle, for which prevent damage or incorrect fitting. 3. Only use metric tools to make services to the motorcycle. The bolts, nuts and bolts metrics are not interchangeable with elements of fixing British. The use of tools and fixers incorrect can damage the motorcycle. 4. Install gaskets, rings o, smugglers hendidos and plates of locks new when carrying out the assembly. 5. By tightening bolts, screws or nuts in series, starting with the larger diameter or by the bolts or screws. Tighten value specified, gradually, and in sequence mixed, unless otherwise specified a different sequence. 6. Clean the pieces with solvent clean after the dismantling. Lubricate the surfaces of slippage before mount again. 7. After assembly, verify all the pieces with regard to its installation and operation. 8. Install all electrical cables as shown in the pages of 1-18 to 1-23, Past of Cables and Cabled .

GENERAL INFORMATION CBX250 IDENTIFICATION OF THE MODEL The number of series of chassis is recorded in the right side of the steering column. The number of identification of the carburetor is recorded in the left side of the carburetor, according to the illustration. The number of series of the engine is recorded in the left side of the casing of the engine. SERIAL NUMBER OF THE ENGINE SERIAL NUMBER OF THE Chassis IDENTIFICATION NUMBER OF THE CARBURETOR

GENERAL INFORMATION 1-4 CBX250 SPECIFICATIONS GENERAL Item Specifications Dimensions Total Length 2.031 mm Total Width 746 mm Total Height 1.057 mm Wheelbase 1.369 mm Height of the saddle 782 mm Minimum ground clearance 162 mm Dry Weight 135 kg Weight in running order 154 kg Capacity of maximum load 150 kg Chassis Type of chassis Cradle semi-double Front Suspension Telescopic Fork Race of the front suspension 116 mm Rear Suspension Swing Arm Race of the rear suspension 100 mm Size of the front tire 100/80 – 17 52S Size of rear tire 130/70 – 17 62S Mark of the tires PIRELLI MT75 Front Brake A single disk, hydraulic Rear Brake A drum, mechanical type, with shoe simple expansion Inclination of the axle of pivot 25,5° Long progress 100 mm Capacity of fuel tank 16,5 l Reserve capacity of fuel 2,5 l Motor Provision of the cylinder Single, with an inclination of 15 degrees (with regard to the vertical) Bore x Stroke 73,0 x 59,5 mm Cylinder capacity 249,0 cm 3 Compression ratio 9,3:1 Command of valves DOHC, Operated silent chain Intake Se abre 10° APMS (Opening 1 mm) Se cierra 30° DPMI (Opening 1 mm) Escape valve Se abre 40° APMI (Opening 1 mm) Se cierra 0° DPMS (Opening 1 mm) Lubrication System Forced by oil pump and wet crankcase Oil pump Trocoidal Cooling System Air cooled Air Filter Element of viscous role Dry Weight of the engine 35,3 kg

GENERAL INFORMATION CBX250 GENERAL (Continued) Item Specifications Carburettor Type Constant speed Diameter of the venturi 30,1 mm Transmission Clutch system Clutch with multiple drives oil bath Operating System of clutch Mechanical Transmission 6 Gears constantly geared Primary Reduction 3,100 (62/20) Final Reduction 2,846 (37/13) Gear Ratio 1ª 2,769 (36/13) 2ª 1,882 (32/17) 3ª 1,333 (28/21) 4ª 1,083 (26/24) 5ª 0,923 (24/26) 6ª 0,814 (22/27) System of changing gears Return System operated with the left foot 1 – N – 2 – 3 – 4 – 5 – 6 Electrical Ignition System CDI digital System Starting System Electrical Loading System Alternator three phase out Regulator/rectifier SCR short-circuiting/triphase, rectification of complete wave Lighting System Battery

GENERAL INFORMATION 1-6 CBX250 Item Quantity Limit of Use Oil capacity of the To drain 1,5 l — motor To change the filter 1,5 l — To disassemble 1,8 l — Recommended MOBIL SUPERMOTO 4T motor oil Classification the Service API: SF — Viscosity: SAE 20W-50 Oil pump Slack between the rotors internal and external 0,15 0,20 Slack between the external rotor and the body of the pump 0,15 – 0,21 0,25 Slack between the rotors and flank of the body of the pump 0,02 – 0,08 0,12 LUBRICATION SYSTEM Unit: mm FUEL SYSTEM Item Specifications Identification Number of the carburetor VEA2A Main Pump 150 Supplier of idling 45 Initial Opening of the idle screw 2 1/4 Turns out Level of float 18,5 mm Rotation of idling 1.400 ± 100 rpm Free Play of the grip of the accelerator 2 – 6 mm

GENERAL INFORMATION CBX250 CYLINDER HEAD/Valves Units mm Item Value Service Limit Compression of the cylinder 1.128 kPa (11,5 kgf/cm 2 , 163,6 psi) a 400 rpm — Twist the cylinder head — 0,10 Camshaft Height of lobe of Camshaft ADM 37,00 – 37,24 36,94 ESC 37,03 – 37,27 36,97 Eccentricity of Camshaft 0,02 0,10 External Diameter of the stumps 24,959 – 24,980 — Internal diameter of the cylinder head 25,000 – 25,021 — Slack oil 0,020 – 0,062 0,10 Valves and valve Valve slack ADM 0,12 — guides ESC 0,15 — External Diameter of body of the valve ADM 4,975 – 4,990 4,96 ESC 4,955 – 4,970 4,94 Internal diameter of the guide to the valve ADM/ESC 5,000 – 5,012 5,03 Slack between the stem and the guide ADM 0,010 – 0,037 0,07 of the valve ESC 0,030 – 0,057 0,09 Width of the seat of the valve ADM/ESC 1,0 – 1,2 2,0 Valve springs Free length Internal ADM/ESC 33,77 32,36 External ADM/ESC 36,64 34,84 Valve actuation External Diameter of actuator ADM/ESC 25,978 – 25,993 25,97 Internal diameter of accommodation ADM/ESC 26,010 – 26,026 26,06 of actuator

GENERAL INFORMATION 1-8 CBX250 Item Value Service Limit Cylinder Inside diameter 73,000 – 73,010 73,11 Ovalization — 0,05 Conicity — 0,05 Warp— 0,05 Piston and Brand of leadership of piston Mark IN oriented toward the — parts of the side of intake piston Mark IN oriented toward the side of intake 72,950 – 72,970 72,87 Measuring Point of D. E. piston 16 mm desde el fondo — D. I. the accommodation of the cotter pin 17,002 – 17,008 17,05 D. E. of cotter pin 16,994 – 17,000 16,97 D. I. the foot of the crank 17,016 – 17,034 17,06 Slack between the cylinder and the piston 0,030 – 0,060 0,23 Slack between the piston and the cotter pin 0,002 – 0,014 0,07 Slack between the crank and the cotter pin 0,016 – 0,040 0,09 Slack between the ring Ring upper 0,015 – 0,050 0,12 of piston and the slot Ring 0,015 – 0,050 0,12 secondary Opening of the limbs of os Ring superior 0,15 – 0,30 0,30 segments of piston Ring 0,30 – 0,45 0,45 secondary Oil Ring (ring lateral) 0,20 – 0,70 0,86 Brand of leadership of Upper/secondary Mark oriented toward top — the rings of the piston CYLINDER / PISTON Units: mm CLUTCH/SELECTOR GEARS Unit: mm Item Value Service Limit Clutch Free Play of the lever clutch 10 – 20 — Free length of spring 35,6 44,7 Thickness of the disk 2,92 – 3,08 2,69 Twist of the plate — 0,30 D.I. de la campana del clutch 25,000 – 25,021 25,04 Guía de la campana del clutch D.I. 19,990 – 20,010 22,05 D.E. 24,959 – 24,980 27,90 D. E. of the main axle to guide to the bell of the clutch 19,959 – 19,980 21,91

HONDA CBX250 CBX 250 Bike Workshop Service Repair Manual

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