Do you have a question about the CB250 Nighthawk and is the answer not in the manual?
Questions and answers
Steven W Kindle
February 14, 2025
Two of my turn signals were broken and hanging down but worked. I bought new turn signals that were led and replaced them. Understand now can't do that. I bought regular signal lights and a new turn signal relay. Still don't work??????
1 comments:
Mr. Anderson
February 14, 2025
Possible reasons why the new turn signal lights and relay are not working on your Honda CB250 Nighthawk:
1. Flasher Relay Issue – The new Tridon flasher relay may be faulty or not compatible with the bike’s electrical system. 2. RPM-Related Voltage Fluctuation – The turn signals stop flashing above 4,000 RPM, which could indicate an issue with voltage regulation or wiring. 3. Wiring Problems – A damaged or loose connection in the wiring may be affecting signal operation. 4. Battery or Charging System Issues – If the battery or charging system is not providing stable voltage, the relay may not function properly. 5. Electrical Load Capacity – Installing aftermarket electrical components that exceed the bike’s electrical system capacity can cause failures. 6. Grounding Issue – Poor grounding can prevent the turn signals from functioning correctly.
To fix the issue, check the relay, wiring connections, battery voltage, and grounding points. If necessary, test the system with a stock relay to see if the problem persists.
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This manual should be considered a permanent part of the motorcycle and should remain with the motorcycle when it is resold. This publication includes the latest production information available before printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without incurring any obligation.
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It’s full of facts, instructions, safety information, When you own a Honda, you’re part of a and helpful tips. To make it easy to use, worldwide family of satisfied customers the manual contains a detailed list of people who appreciate Honda’s...
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California to cause cancer and birth motorcycle best and is dedicated to your defects or other reproductive harm. complete satisfaction. Please report any change of address or ownership to your Honda dealer so we will be able to contact you concerning important production information. Introduction...
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A Few Words About Safety Your safety, and the safety of others, is very important. And operating this motorcycle safely is an important responsibility. To help you make informed decisions about safety, we have provided operating procedures and other information on labels and in this manual. This information alerts you to potential hazards that could hurt you or others.
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A Few Words About Safety You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be HURT if you don’t follow instructions. Safety Headings ––...
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Contents These pages give an overview of the Before Riding ........contents of your owner’s manual. The first The importance of wearing a helmet page of each section lists the topics and other protective gear, how to make covered in that section. sure you and your motorcycle are ready to ride, and important information about loading.
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...... ID numbers, technical specifications, Why your motorcycle needs regular and other technical facts. maintenance, what you need to know before servicing your Honda, an owner maintenance schedule, and instructions Consumer Information ..... for specific maintenance and Information on warranties, emission adjustment items.
Motorcycle Safety This section presents some of the most Important Safety Information ....important information and Accessories & Modifications ....recommendations to help you ride your Safety Labels ........... motorcycle safely. Please take a few moments to read these pages. This section also includes information about the location of safety labels on your motorcycle.
Important Safety Information Your motorcycle can provide many years Always Wear a Helmet of service and pleasure if you take It’s a proven fact: helmets significantly responsibility for your own safety and reduce the number and severity of head understand the challenges you can meet injuries.
Important Safety Information Take Time to Learn & Practice Always pay attention to other vehicles Even if you have ridden other motorcycles, around you, and do not assume that other take time to become familiar with how drivers see you. Be prepared to stop this motorcycle works and handles.
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Important Safety Information Ride within Your Limits Keep Your Honda in Safe Condition Pushing limits is another major cause of It’s important to keep your motorcycle motorcycle accidents. Never ride beyond properly maintained and in safe riding your personal abilities or faster than condition.
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Before you consider making any modifications or adding an We strongly recommend that you use only accessory, be sure to read the following genuine Honda accessories that have been information. specifically designed and tested for your motorcycle. Because Honda cannot test all...
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Accessories & Modifications Do not install any fairing or windshield Modifications unless it was designed and tested by Honda for your motorcycle. Some fairings or windshields, even smaller We strongly advise you not to remove any ones, can cause unstable handling of original equipment or modify your your motorcycle.
Safety labels on your motorcycle either warn you of potential hazards that could cause serious injury or they provide important safety information. Read these labels carefully and don’t remove them. If a label comes off or becomes hard to read, contact your Honda dealer for a replacement. Motorcycle Safety...
Instruments & Controls This section shows the location of all Component Locations ......10 gauges, indicators, and controls you would Indicators ..........13 normally use before or while riding your Controls & Features motorcycle. Fuel Valve .......... . 17 Choke Knob ........
Indicators The indicators on your motorcycle keep (1) speedometer you informed, alert you to possible (2) odometer problems, and make your riding safer and (3) gear range indicator more enjoyable. Refer to the indicators (4) neutral indicator frequently. Their functions are described (5) side stand indicator on the following pages.
If one of these indicators does not come on when it should, have your Honda dealer check for burned-out bulbs or other problems.
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Indicators speedometer Shows riding speed in miles per hour. odometer Shows the total miles ridden. gear range indicator Shows proper speed range for each gear. neutral indicator (green) Lights when the transmission is in neutral. side stand indicator Lights when the side stand is put down to indicate (amber) that the side stand ignition cut-off system (page is activated.
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Indicators turn signal indicator Flashes when either turn signal operates. (amber) high beam indicator Lights when the headlight is on high beam. (blue) tripmeter Shows the number of miles ridden since you last reset the meter. To zero (0) the tripmeter, turn the tripmeter reset knob.
Controls & Features For complete information about fueling Fuel Valve your motorcycle, see page Choke Knob LEFT FRONT (1) fuel valve The three-way fuel valve is used to control the flow of fuel from the fuel tank to the carburetors. ON normal position for riding.
Controls & Features FRONT Ignition Switch The ignition switch is used for starting and stopping the engine (page ). The ignition key is also used to lock the steering for theft prevention (page Insert the key and turn it to the right for the ON position.
Controls & Features Start Button Engine Stop Switch RIGHT HANDLEBAR The start button ( ) is used for starting the engine. Pushing the button in starts the engine. See Starting Procedure, page When the start button is pushed, the starter motor will crank the engine;...
Controls & Features If your motorcycle is stopped with the Turn Signal Switch ignition switch ON and the engine stop switch OFF, the headlight and taillight will remain on, resulting in battery The turn signal switch ( ) is used to signal discharge.
Controls & Features Horn Button The horn is used to alert other motorists. To operate, push the horn button ( ). Tripmeter Reset Knob The reset knob ( ) is used to reset the tripmeter to zero (0) by turning the knob in the direction shown.
Before Riding Before each ride, you need to make sure Are You Ready to Ride ..... . 24 you and your Honda are both ready to ride. Protective Apparel ......24 To help get you prepared, this section Rider Training ........
Are You Ready to Ride? Before you ride your motorcycle for the If you must carry an extra helmet while first time, we urge you to: riding, use a commercially-available Read this owner’s manual. elastic cord, strap, or net to secure the Make sure you understand all the safety helmet to the seat.
Are You Ready to Ride? Helmets and Eye Protection Your helmet is your most important piece of riding gear because it offers the best Not wearing a helmet increases the chance of serious injury or protection against head injuries. A helmet death in a crash.
Are You Ready to Ride? A motorcycle riding suit or jacket for We urge all riders to take a certified comfort as well as protection. course approved by the Motorcycle Safety Bright-colored and reflective clothing Foundation (MSF). New riders should can help make you more noticeable in start with the basic course, and even traffic.
Is Your Motorcycle Ready to Ride? Before each ride, it’s important to inspect Pre-ride Inspection your motorcycle and make sure any problem you find is corrected. A pre-ride inspection is a must, not only for safety, Check the following items before you get but because having a breakdown, or even on the motorcycle: a flat tire, can be a major inconvenience.
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Is Your Motorcycle Ready to Ride? Leaks, Walk around your If you are carrying a passenger or cargo, Loose motorcycle and look for also check the following: Parts anything that appears unusual, such as a leak or Load Limits Make sure you do not loose cable.
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Pull the brake lever and press on the brake pedal to Remember, be sure to take care of any check that they operate problem you find, or have your Honda normally. dealer correct it before you ride. Indicators Turn the ignition on and...
Overloading or improper loading impair your motorcycle’s handling, can cause a crash and you can be braking, and stability. Non-Honda accessories, improper modifications, and seriously hurt or killed. poor maintenance can also reduce your Follow all load limits and other safety margin.
If you wish to carry more cargo, check with your Honda dealer for advice, and be maximum cargo weight: sure to read the information regarding 30 lbs (14 kg)
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Load Limits & Guidelines Follow these guidelines whenever you carry a passenger or cargo: Check that both tires are properly inflated (page If you change your normal load, you may need to adjust the rear suspension (page To prevent loose items from creating a hazard, make sure that all cargo is tied down securely before you ride.
Basic Operation & Riding This section gives basic riding instructions, Safe Riding Precautions ......34 including how to start and stop your Starting & Stopping the Engine .... . 35 engine, and how to use the throttle, clutch, Preparation .........
Safe Riding Precautions Before riding your motorcycle for the first time, please review the Motorcycle Saf ety section beginning on page 1, and the Bef ore Riding section beginning on page Even if you have ridden other motorcycles, take time to become familiar with how this motorcycle works and handles.
Starting & Stopping the Engine Always follow the proper starting clutch lever pulled in. After starting with procedure described below. the side stand down, the engine will stop if the transmission is put in gear before For your safety, avoid starting or operating raising the side stand.
Starting & Stopping the Engine If the engine is cold, pull the choke Starting Procedure knob up all the way to fully ON ( ). Start the engine, leaving the throttle To restart a warm engine, follow the closed. procedure for High Air Temperature.
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Starting & Stopping the Engine High Air Temperature Continue warming up the engine until it 35°C (95°F) or above runs smoothly and responds to the Do not use the choke. throttle when the choke knob is at fully Open the throttle slightly. OFF ( ).
Starting & Stopping the Engine Start the engine. Flooded Engine If the engine still won’t start, refer to If the engine fails to start after repeated Your Engine Quits or Won’t Start, page attempts, it may be flooded with excess fuel.
Starting & Stopping the Engine Emergency Engine Stop How to Stop the Engine To stop the engine in an emergency, use the engine stop switch. To operate, turn Normal Engine Stop the switch to the OFF position. To stop the engine, shift into neutral and turn the ignition switch OFF.
Shifting Gears Close the throttle and pull the clutch lever in completely before shifting. Improper shifting may damage the engine, transmission, and drive train. Learn to recognize the engagement point as you release the clutch lever. It is at this point the transmission of power to the rear wheel resumes.
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Shifting Gears Avoid downshifting to help slow your Shif ting Up: motorcycle when engine rpm is high. From 1st to 2nd: 12 mph (20 km/h) Downshifting when engine speed is From 2nd to 3rd: 19 mph (30 km/h) near its allowable maximum may over- From 3rd to 4th: 25 mph (40 km/h) rev the engine and cause possible...
Braking Your motorcycle is equipped with brakes slowing your speed. The increase mechanically-activated drum brakes. in engine compression from downshifting Operating the brake lever applies the front will help slow your motorcycle. drum brake. Depressing the brake pedal applies the rear drum brake. To prevent stalling the engine, pull the clutch lever in before coming to a As a general rule, the front braking system...
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Braking When possible, reduce your speed or Riding with your foot resting on the complete braking before entering a turn. brake pedal or your hand on the brake Avoid braking or closing the throttle lever may actuate the brakelight, giving quickly while turning.
Parking Look for a level parking area. If you ignition cut-off system (page ) is can’t park on a paved surface, make activated. sure the ground surface is firm, If you have to park on a soft surface, especially under the side stand. insert something solid under the side If you must park on a hill, leave the stand for support.
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Parking Use the helmet holder ( ) to secure your helmet with your motorcycle: Insert the ignition key ( ) and turn it Riding with a helmet attached to the holder can interfere with the clockwise to unlock the holder ( ). rear wheel or suspension and Hang your helmet on the holder.
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Parking If you decide to use an anti-theft device, Theft-Prevention Tips select one of good quality and be sure to follow the manufacturer’s instructions. Park your motorcycle in a locked Keep your owner’s manual, current garage whenever possible. If a garage registration, and insurance information isn’t available, park in a concealed area with your motorcycle.
Riding with a Passenger or Cargo Your motorcycle is designed to carry you Before riding with a passenger, make sure and one passenger. Whenever you add a your passenger is wearing the proper passenger or cargo, you must be careful protective apparel (page not to exceed the total load limits for this vehicle (...
‘‘certified’’ to EPA standards. You’ll also find important safety precautions, information on fuels and oils, Bef ore You Service Your Honda and tips for keeping your Honda looking The Importance of Maintenance ... . 52 great.
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Servicing Your Honda The following table summarizes the three types of inspections and servicing recommendations for your motorcycle. Both the pre-ride inspection and the scheduled maintenance at the recommended intervals are necessary to assure safe and dependable performance. The periodic checks provide additional confidence in your motorcycle’s performance.
Maintenance Schedule in this section. If your motorcycle overturns or is involved in a crash, be sure your Honda dealer inspects all major parts, even if you are able to make some repairs. Servicing Your Honda...
Other tasks that are more difficult and require special tools are best performed by professionals. Wheel removal should normally be handled only by a Honda Failure to properly follow technician or other qualified mechanic. maintenance instructions and...
Burns from hot motorcycle parts. clean parts. Keep cigarettes, sparks, and the engine and exhaust system cool flames away from all fuel-related parts. before touching. Injury from moving parts. Do not run the engine unless instructed to do so. Servicing Your Honda...
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Maintenance Safety Remember that your Honda dealer knows your motorcycle best and is fully equipped to maintain and repair it. To ensure the best quality and reliability, use only new genuine Honda parts or their equivalents for repair and replacement. If you have the...
It’s a good idea to perform this maintenance any time you clean your motorcycle. Check the odometer reading and perform any scheduled maintenance checks that are needed (page ). Remember, more frequent checks may be needed for riding in severe conditions. Servicing Your Honda...
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) and rear brake pedal (page Drive Chain Check condition, adjust slack, and lubricate as needed (page Fuses Make sure you have a full supply of spare fuses. Nuts & Bolts Check the major fasteners and tighten as needed. Servicing Your Honda...
We recommend that you have your Honda dealer perform these The service intervals in this Maintenance tasks unless you have advanced Schedule are based on average riding mechanical skills and the required tools conditions.
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Consult your your own maintenance, use only genuine Honda dealer. Honda parts or their equivalents for repair Should be serviced by your Honda or replacement to ensure the best quality dealer, unless you have the proper tools and reliability.
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L: lubricate Service more frequently if the R: replace motorcycle is ridden in unusually wet or dusty areas. Service more frequently if the motorcycle is ridden often at full throttle or in the rain. California type only. Servicing Your Honda...
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EVAPORATIVE EMISSION CONTROL SYSTEM Should be serviced by your Honda dealer, unless you have the proper tools and service data and are mechanically qualified. Refer to the official Honda Service Manual (page In the interest of safety, we recommend these items be serviced only by your Honda dealer.
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WHEELS/TIRES STEERING HEAD BEARINGS Should be serviced by your Honda dealer, unless you have the proper tools and service data and are mechanically qualified. Refer to the official Honda Service Manual (page In the interest of safety, we recommend these items be serviced only by your Honda dealer.
Use the space under Notes to record anything you want to remind yourself about or mention to your dealer. Miles (km) Odometer Date Performed By: Notes (1,000) 4,000 (6,400) 8,000 (12,800) 12,000 (19,200) 16,000 (25,600) 20,000 (32,000) Servicing Your Honda...
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Maintenance Record Miles (km) Odometer Date Performed By: Notes 24,000 (38,400) 28,000 (44,800) 32,000 (51,200) 36,000 (57,600) 40,000 (64,000) 44,000 (70,400) 48,000 (76,800) 52,000 (83,200) 56,000 (89,600) 60,000 (96,000) 64,000 (102,400) 68,000 (108,800) Servicing Your Honda...
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Component Locations rear spring pre-load adjuster fuel valve owner’s manual storage front brake adjusting nut air cleaner side stand side cover drive chain Servicing Your Honda...
22 mm box end wrench RIGHT SIDE extension bar spark plug wrench handle bar pin spanner tool bag (1) tool kit (2) tool kit compartment Servicing Your Honda...
Turn the key clockwise. Open the compartment cover. To close the compartment cover, align its tabs and push it in. Turn the key counterclockwise. Remove the key. (1) tool kit compartment (2) tool kit (3) ignition key (4) compartment cover Servicing Your Honda...
(and other documents) in the plastic storage bag ( ) in the storage compartment ( ) under the seat. Be careful not to flood this area when washing your motorcycle. (1) owner’s manual storage bag (2) owner’s manual storage compartment Servicing Your Honda...
Turn the ignition key counterclockwise to lock the seat, then remove the key. Be sure to securely lock the seat after reinstalling it. (1) ignition key (4) seat (2) helmet holder (5) prongs (3) seat lock lever (6) fuel tank stay Servicing Your Honda...
The side cover ( ) must be removed for Remove the bolts ( ). battery and air cleaner maintenance. Pull out the studs ( ). Installation Installation can be done in the reverse order of removal. (1) side cover (3) studs (2) bolts Servicing Your Honda...
If pinging or components. spark knock persists, consult your Honda dealer. Your engine is designed to use any gasoline that has a pump octane number of 86 or higher.
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(1) ignition key (3) filler neck (2) fuel fill cap out of fuel with no reserve. Insert the ignition key ( ) in the fuel fill cap ( ) and turn it clockwise. Servicing Your Honda...
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Turn the fuel valve ON (if it was set on RES). Gasoline is highly flammable and explosive. You can be burned or seriously injured when handling fuel. Stop the engine and keep heat, sparks and flame away. Handle fuel only outdoors. Wipe up spills immediately. Servicing Your Honda...
Operating the engine with old or dirty oil can damage your engine. Running the engine with insufficient oil can cause serious damage to the engine and transmission. Change the engine oil as specified in the maintenance schedule on page Servicing Your Honda...
Engine Oil Oil Recommendation suggested oil Pro Honda GN4 or HP4 (without SG or higher molybdenum additives) 4-stroke classification except oils oil, or an equivalent motorcycle labeled as energy oil. conserving on the circular API Suggested oils are equal in performance...
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Do not use API SH or higher oils displaying a circular API ‘‘energy conserving’’ service label on the container. They may affect lubrication and clutch performance. NOT RECOMMENDED Do not use non-detergent, vegetable, or castor based racing oils. Servicing Your Honda...
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4-stroke motorcycle engines. There are two classes: MA and MB. Oil conforming to the standard has the following classification on the oil container. (1) code number of the sales company of the oil (2) oil classification Servicing Your Honda...
Insert the oil filler cap/dipstick until it seats, but don’t screw it in. (1) oil filler cap/dipstick (3) lower level (2) upper level mark mark Park your motorcycle on its side stand on a firm, level surface. Servicing Your Honda...
(Do not overfill.) of the drained fluid (page ). If you do Reinstall the oil filler cap/dipstick. not have the skills or the tools, see your Check for oil leaks. Honda dealer. Servicing Your Honda...
Place a drain pan under the crankcase drain bolt ( ). To drain the oil, remove the oil filler cap/dipstick, crankcase drain bolt ( ), and sealing washer ( ). (1) crankcase (2) sealing washer drain bolt Servicing Your Honda...
Check that there are no oil leaks. 18 lbf·ft (25 N·m , 2.5 kgf·m) If a torque wrench is not used for installation, see your Honda dealer as soon as possible to verify proper assembly. Servicing Your Honda...
Your Honda dealer can help you determine the correct service interval for your riding conditions. Improper or lack of proper air cleaner maintenance can cause poor perf ormance Your motorcycle’s air cleaner has very...
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(4) air cleaner (5) tube Disconnect the tube ( ) from the air cleaner. Discard the air cleaner. Install a new air cleaner. (1) screws Install the removed parts in reverse (2) air cleaner housing cover order of removal. Servicing Your Honda...
(1) crankcase breather tube plug Place a drain pan under the crankcase breather tube plug ( ). Remove the plug to drain the deposits in the tube. Reinstall the crankcase breather tube plug. Servicing Your Honda...
Adjustment Loosen the lock nut ( ). Turn the adjuster ( ). After adjustment, check for smooth rotation of the throttle grip from fully closed to fully open in all steering positions. (2) adjuster (1) lock nut Servicing Your Honda...
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Check that the throttle assembly is positioned properly and the securing bolts are tight. Check for smooth rotation of the throttle from fully open to fully closed in all steering positions. If there is a problem, see your Honda dealer. Servicing Your Honda...
Proper freeplay adjustment allows a smooth, gradual Refer to Saf ety Precautions on page engagement when shifting gears. LEFT HANDLEBAR Improper freeplay adjustment can cause premature clutch wear. (1) clutch lever Servicing Your Honda...
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Pull back the rubber dust cover ( ). Loosen the upper lock nut ( ). Turn the upper clutch cable adjuster ( ) to obtain the specified freeplay. Tighten the upper lock nut and check the freeplay again. Install the dust cover. Servicing Your Honda...
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Turn the lower adjusting nut ( ) to obtain the specified freeplay. RIGHT SIDE Tighten the lower lock nut and check the adjustment. (5) lock nut ( ) increase free play (6) adjusting nut ( ) decrease free play Servicing Your Honda...
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Lubricate the clutch cable with a clutch friction discs may be worn. See commercially-available cable lubricant your Honda dealer or refer to the official to prevent premature wear and Honda Service Manual (page corrosion.
Engine Idle Speed The best way to assure proper carburetion Idle Speed Adjustment is to see your Honda dealer for regularly scheduled servicing, including carburetor adjustment. Refer to Saf ety Precautions on page RIGHT SIDE Remember, idle speed adjustment is not a ‘‘cure-all’’...
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Engine Idle Speed Connect a tachometer to the engine. Shift into neutral. Start the engine. Adjust idle speed with the throttle stop screw ( ). Idle speed (in neutral): 1,500 100 rpm Servicing Your Honda...
Use only the recommended type of spark plugs in the recommended heat range. Using spark plugs with an improper heat range can cause engine damage. (cont’d) Servicing Your Honda...
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( ) carefully. The gap should be: 0.024 0.028 in (0.60 0.70 mm) (1) spark plug gap (2) side electrode With the plug washers attached, thread the spark plugs in by hand to prevent cross-threading. Servicing Your Honda...
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If a plug is too loose, a piston may be damaged. If a plug is too tight, the threads may be damaged. Reinstall the spark plug caps. Take care to avoid pinching any cables or wires. Servicing Your Honda...
Higher spring pre-load traction and comfort are maintained as the provides a firmer ride and is wheels ride over road surfaces. recommended for heavy loads, rough road conditions, and faster, more challenging riding. Servicing Your Honda...
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(and passenger) weight and riding conditions by changing the spring pre-load. RIGHT SIDE Do not attempt to disassemble, service, or dispose of the damper; see your Honda dealer. The instructions found in this owner’s manual are limited to adjustments of the shock assembly only.
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5 to 1 may damage the shock absorber. Position 1: for a light load and smooth road conditions. Position 2: standard position. Positions 3 to 5: for when the motorcycle is more heavily loaded. (Also increase spring pre-load for stiffer rear suspension.) Servicing Your Honda...
Front Brake Lever Freeplay systems on your motorcycle dissipate the heat generated by the friction of the brake shoes on the drum as the wheels are Refer to Saf ety Precautions on page slowed. RIGHT HANDLEBAR (1) front brake lever Servicing Your Honda...
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(3) arm pin ( ) decrease free play Apply the brake several times and check for free wheel rotation after the brake lever is released. If proper adjustment cannot be obtained by this method, see your authorized Honda dealer. Servicing Your Honda...
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If necessary, adjust to the specified Loosen the lock nut ( ) and turn the range. stopper bolt ( ). Tighten the lock nut ( ). RIGHT FRONT (1) lock nut (3) rear brake pedal (2) stopper bolt Servicing Your Honda...
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Make sure the brake rod, brake arm, times. spring, and fasteners are in good Check the freeplay. If you can’t adjust condition. the freeplay properly, see your Honda dealer. RIGHT REAR (4) adjusting nut ( ) increase freeplay (5) arm pin...
( ) on the brake panel ( ) upon full application of the brake. (1) arrow (3) reference mark If replacement is necessary, see your (2) brake arm (4) brake panel Honda dealer. Servicing Your Honda...
The following pages give detailed information on how and when to check your air pressure, how to inspect your tires Servicing Your Honda...
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‘‘warm’’ –– even if your motorcycle has only been ridden for a few miles –– the readings will be higher. If you let air out of warm tires to match the recommended cold pressures, the tires will be underinflated. Servicing Your Honda...
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Cuts, slits, or cracks in the tires. Replace the tire if you can see fabric or cord. Nails or other foreign objects embedded in the side of the tire or tread. (1) wear indicator Excessive tread wear. (2) wear indicator location mark Servicing Your Honda...
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A repaired tube will not have the same reliability as a new one, and it may fail while you are riding. And the tire will have lower speed and performance limits than a new one. Servicing Your Honda...
If you have a tire and tube professionally braking, durability, and comfort. repaired at a non-Honda facility, we recommend that you have the work You should replace the tires with tires of checked by your Honda dealer.
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Whenever you replace a tire, remember: Always use the size and type of Have the wheel balanced after the tire is tires recommended in this owner’s installed. manual. Have the tire replaced by your Honda dealer if possible. Servicing Your Honda...
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The old tube will probably be stretched. If installed in a new tire, it could fail. If you have a tire professionally replaced at a non-Honda facility, we recommend that you have the work checked by your Honda dealer. Important Safety Reminders Do not install a radial tire on this motorcycle.
The engine should stop as you lower the (1) side stand spring side stand. If the engine doesn’t stop, see your Honda dealer for service. Check that the side stand assembly is working properly. If the side stand is stiff or squeaky, clean the pivot area and lubricate the pivot bolt with clean grease.
Maintenance Schedule. The drive chain should be checked, adjusted, and lubricated as part of the pre- ride inspection (page Servicing Your Honda...
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Lubricating excessive wear the chain will often eliminate binding improper adjustment and kinking. damaged or missing O-rings Inspect the drive chain for: damaged rollers dry or rusted links kinked or binding links Servicing Your Honda...
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Adjust chain slack if needed. Inspect the front and rear sprocket teeth for excessive wear or damage. If necessary, have your Honda dealer replace a worn sprocket. normal sprocket teeth GOOD Use of a new chain with worn sprockets will cause rapid chain wear.
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The proper slack is: 13/16 1 3/16 in (20 30 mm) Servicing Your Honda...
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13/16 1 3/16 in (20 30 mm) Place the motorcycle on its side stand with the transmission in neutral and the ignition switch OFF. Loosen the rear axle nut ( ). Servicing Your Honda...
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Torque the rear axle nut to: 43 lbf·ft (59 N·m , 6.0 kgf·m) If a torque wrench is not used for this installation, see your Honda dealer as soon as possible to verify proper assembly. Improper assembly may lead to a loss of braking capacity.
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Your motorcycle has an endless (riveted rollers, loose fitting links, damaged master link) type chain. It should only be O-rings, or otherwise appears removed or replaced by your Honda dealer. unserviceable. Replacement Chain: The O-rings can be damaged by steam...
Battery posts, terminals and accessories on your motorcycle –– or do related accessories contain lead and lead not ride frequently, we recommend that compounds. Wash hands after handling. you charge the battery frequently (see Battery Charging, page Servicing Your Honda...
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You will get the best storage results from Wear protective clothing and a removing the battery and slow (trickle) face shield, or have a skilled charging it every 30 days (see Battery Charging, page mechanic do the battery maintenance. Servicing Your Honda...
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( ) and nut ( ). Pull the battery ( ) out of the battery box. (1) negative ( ) terminal lead (2) positive ( ) terminal lead (3) battery holder (4) bolt (5) nut (6) battery (cont’d) Servicing Your Honda...
(1) ‘‘trickle’’ charger Slow charge the battery (see following section) once every 30 days. Be sure to read the information that came with your battery charger and follow the instructions on the battery. Improper charging may damage the battery. Servicing Your Honda...
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However, do not intentionally leave the charger connected longer than the time period recommended in the charger’s instructions. Avoid using an automotive-type battery charger. An automotive charger can overheat a motorcycle battery and cause permanent damage. Servicing Your Honda...
Appearance Care Frequent cleaning and polishing will keep Avoid products that contain harsh your Honda looking newer longer. detergents or chemical solvents that Frequent cleaning also identifies you as an could damage the metal, paint, and owner who values your motorcycle. A plastic on your motorcycle.
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High wear, and leaks (fuel, oil). pressure washers (like those at coin- operated car washes) can damage certain parts of your motorcycle. High pressure water (or air) can damage certain parts of your motorcycle. Servicing Your Honda...
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Wash your motorcycle with a sponge or a soft towel. As you wash, check for heavy grime. If necessary, use a mild cleaner/degreaser to remove the grime. Servicing Your Honda...
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If the inside of the headlight lens Avoid using spray cleaner products on the appears clouded immediately after tires or suspension components. washing, it should clear after a few minutes of riding. Suggestions for using spray cleaner(s) follow: Servicing Your Honda...
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If necessary, rub with a sponge. Rinse and dry. Apply a spray cleaner/polish and wipe with a non-abrasive cloth. Dull, corroded chrome or Apply a high quality chrome/aluminum aluminum. polish and wipe with a non-abrasive cloth. Servicing Your Honda...
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If a surface on your motorcycle is chipped or scratched, your Honda dealer has touch- up paint to match your motorcycle’s color. Be sure to use your motorcycle’s color code (page ) when you buy touch-up paint.
Tips Here’s a few helpful tips on how to store Storing Your Honda ......134 and transport your Honda, and how to be Transporting Your Motorcycle ... . 138 an environmentally responsible You & the Environment ...... . 139 motorcycle owner.
Honda Motorcycle Winter Storage Fill the fuel tank. Make sure the fuel fill Guide, available from your Honda dealer. cap is properly installed. We suggest you perform the following procedures to keep your motorcycle in top condition. These storage procedures will reduce the deterioration that can occur during storage.
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Storing Your Honda Drain the carburetors into an approved To prevent rusting in the cylinders, gasoline container and dispose of it in perform the following: an approved manner (page Remove the spark plug caps from the If storage will last longer than one spark plugs.
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Storing Your Honda With the engine stop switch in the Store your motorcycle in an unheated RUN position, press the start button area, free of dampness, away from several times to crank the engine and sunlight, with a minimum of daily distribute the oil.
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–– change the engine oil (page If your motorcycle has been stored for more than two months –– ask your Honda dealer to drain and replace the fuel. Charge the battery (page ) as required. Install the battery.
Transporting Your Motorcycle If your motorcycle needs to be transported, it should be carried on a motorcycle trailer, or a truck or trailer with a flatbed area. For information about 24-hour emergency assistance, see page . Do not tow your motorcycle, as towing can seriously damage the transmission.
You & the Environment Owning and riding a motorcycle can be Recycle Wastes. It’s illegal and enjoyable, but you must do your part to thoughtless to put used engine oil in the protect nature. trash, down a drain, or on the ground. Used oil, gasoline, coolant, and Following are tips on how you can be an cleaning solvents contain poisons that...
Taking Care of the Unexpected This section discusses the more common General Guidelines ....... 142 problems that can occur with your If Your Engine Quits or motorcycle while you’re riding. It tells Won’t Start .......... . 143 you how to evaluate each problem and If You Have a Flat Tire .......
(USA only: For information possible. about the Honda Rider’s Club of America, Do not continue riding if you are hurt or see page your motorcycle is not in safe riding condition.
If you have a problem starting the but the engine won’t start symptom. engine or experience poor engine performance the following information may help you. If you can’t correct the problem, see your Honda dealer. Taking Care of the Unexpected...
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Tighten the battery lead. dead battery Charge the battery (page ). If charging doesn’t help, see your Honda dealer. faulty starter motor If all possible causes are negative, the starter motor may be faulty. See your Honda dealer. Taking Care of the Unexpected...
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If the engine still won’t start, see your Honda dealer. loose battery cables Tighten the battery terminal bolts. weak battery Charge the battery (page ). If charging doesn’t help, see your Honda dealer. Taking Care of the Unexpected...
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POSSIBLE CAUSE WHAT TO DO idles roughly, too fast, stalls Check engine idle adjustment (page ). If the problem persists, see your Honda dealer. runs erratically, misfires See your Honda dealer. blubbers (rich fuel mixture) See your Honda dealer. Taking Care of the Unexpected...
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If applicable, switch to the recommended octane load gasoline (page ) or change your brand of gasoline. If the problem persists, see your Honda dealer. afterfires (backfires) See your Honda dealer. pre-ignition (runs on after See your Honda dealer.
Honda does not recommend that you make side of the road so you can inspect the a temporary repair to a tube-type tire.
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If You Have a Flat Tire check the air pressure. If the tire is losing pressure, it may be unsafe to continue Riding your motorcycle with a riding. As the tire gets low, it will affect temporary tire or tube repair can the handling of your motorcycle be risky.
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( ), and disconnect the brake cable ( ) from the brake arm. We recommend wheel removal be done Remove the front axle nut ( ). only by your Honda dealer or another LEFT FRONT qualified mechanic. Do not attempt to remove the wheel on your own. Wheel removal requires mechanical skill and professional tools.
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If You Have a Flat Tire Remove the front axle shaft ( ), wheel Installation and side collar. Install the side collar and position the wheel between the fork legs. Insert the RIGHT FRONT front axle shaft from the right side, through the left fork leg and wheel hub.
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Recheck the wheel if the brake drags or the wheel does not rotate freely. If a torque wrench was not used for installation, see your Honda dealer as soon as possible to verify proper assembly. Improper assembly may lead to loss of braking capability.
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Refer to Saf ety Precautions on page We recommend wheel removal be done only by your Honda dealer or another qualified mechanic. Do not attempt to remove the wheel on your own. Wheel removal requires mechanical skill and professional tools.
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If You Have a Flat Tire Disconnect the brake stopper arm ( Remove the rear axle nut ( ) while from the brake panel by removing the holding the axle at the other end with a cotter pin ( ), stopper arm nut ( wrench.
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If a torque wrench was not used for panel, wheel hub. installation, see your Honda dealer as soon Reassemble the brake stopper arm. as possible to verify proper assembly. Tighten the stopper arm nut to the...
If a Fuse Blows All of the electrical circuits on your The main fuse is located on the starter motorcycle have fuses to protect them motor magnetic switch ( ) under the from damage caused by excess current seat. flow (short circuit or overload). The circuit fuse boxes (including spare fuses) are located under the seat.
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If a Fuse Blows To access the main fuse ( ), remove Disconnect the wire connector ( ) of the seat (page the starter magnetic switch ( ). Pull the fuse out. If the main fuse is UNDER SEAT blown, install a new main fuse ( ). Reconnect the wire connector.
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If a Fuse Blows UNDER SEAT (7) blown fuse Install the fuse box cover. Install the seat. (5) fuse box cover (8) spare fuses (6) fuse box If you do not have a replacement fuse with the proper rating for the circuit, install one with a lower rating.
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If the replacement fuse of the same rating burns out in a short time, there is probably a serious electrical problem on your motorcycle. Leave the blown fuse in that circuit and have your motorcycle checked by your Honda dealer. Taking Care of the Unexpected...
If you don’t know your key number, call the dealer you purchased your Honda from. They may have it listed in their records. If they don’t, transport your motorcycle to them or the nearest Honda dealer.
Bump starting is also not recommended. If you can’t charge the battery or it appears unable to hold a charge, contact your Honda dealer. Taking Care of the Unexpected...
Technical Information This section contains dimensions, Vehicle Identification ......164 capacities, and other technical data, plus License Plate Installation ..... 167 information on government requirements Specifications ........168 and how to break-in your motorcycle. Break-in Guidelines ......
Vehicle Identification The VIN (vehicle identification number) Serial Numbers appears on the Safety Certification Label attached to the left side of the steering The frame, VIN, and engine serial head. numbers are required when you register your motorcycle. They may also be LEFT SIDE required when ordering replacement parts.
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Vehicle Identification The frame number ( ) is stamped on the The engine number ( ) is stamped on the right side of the steering head. left side of the crankcase. RIGHT SIDE LEFT SIDE (2) frame number (3) engine number Technical Information...
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Vehicle Identification UNDER SEAT Color Label & Code The color label is attached to the frame under the seat. Remove the seat (page to check the label. The color code is helpful when ordering replacement parts. You may record the color and code in the Quick Reference section at the rear of this manual.
License Plate Installation When you install a license plate ( ), be sure to use the washers ( ) under the heads of the plate mounting screws, as shown, to prevent possible vibration damage to the plate. The washers are placed in a plastic bag in the document compartment.
Specifications Dimensions 82.4 in (2,092 mm) overall length 29.2 in (741 mm) overall width 42.8 in (1,087 mm) overall height 56.3 in (1,430 mm) wheelbase 6.3 in (160 mm) ground clearance Weight 287 lbs (130 kg) dry weight California only 289 lbs (131 kg) Technical Information...
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API service label, SAE 10W-40, JASO T 903 standard MA, Pro Honda GN4 or HP4 (without molybdenum additives) 4-stroke oil , or an equivalent motorcycle oil SAE 80 or 90 gear oil...
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Specifications Capacities Operator and one passenger passenger capacity maximum weight 352 lbs (160 kg) capacity rider, passenger, all cargo and accessories Engine Specifications displacement 14.3 cu-in (234 cm ) bore & stroke 2.09 2.09 in (53.0 53.0 mm) compression ratio 9.2 : 1 spark plug (standard) CR6HSA (NGK)
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Specifications Power Transmission 3.631 primary reduction 2.846 gear ratio, 1st 1.777 1.333 1.083 0.913 2.357 final reduction drive (engine) sprocket: 14 teeth standard driven (rear wheel) sprocket: 33 teeth sprocket sizes final drive chain DID520VC5 RK520MOZ9 Technical Information...
Break-in Guidelines Help assure your motorcycle’s future reliability and performance by paying extra attention to how you ride during the first 300 miles (500 km). During this period, avoid full-throttle starts and rapid acceleration. Technical Information...
See your Honda dealer. However, the carburetors must be returned to standard factory specifications before riding again at lower altitudes (below 5,000 feet, 1,500 m). See your Honda dealer. Sustained riding at lower altitudes with the lean high-altitude setting may cause rough idling, stalling, or engine damage from overheating.
Emission Control Systems Exhaust Emission Requirements The U. S. Environmental Protection UNDER SEAT Agency (EPA) and the California Air Resources Board (CARB) require that your motorcycle comply with applicable exhaust emissions standards during its useful life, when operated and maintained according to the instructions provided.
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Compliance with the terms of the Distributor’s Warranties for Honda Honda Motor Co., Ltd. utilizes lean Motorcycle Emission Control Systems is carburetor settings and other systems to necessary in order to keep the emissions reduce carbon monoxide and system warranty in effect.
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Emission Control Systems Exhaust Emission Control System Evaporative Emission Control System The exhaust emission control system (California only) consists of lean carburetor settings, and no This motorcycle complies with the adjustment should be made except idle requirements of the California Air speed adjustment with the throttle stop Resources Board (CARB) evaporative screw.
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If you are aware of any of the following crankcase emissions into the atmosphere. symptoms, have the vehicle inspected and Blow-by gas is returned to the combustion repaired by your authorized Honda chamber through the air cleaner and the motorcycle dealer. carburetor.
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Emission Control Systems Noise Emission Control System AMONG THOSE ACTS PRESUMED TAMPERING WITH THE NOISE TO CONSTITUTE TAMPERING ARE CONTROL SYSTEM IS PROHIBITED: THE FOLLOWING ACTS: U. S. federal law prohibits, or Canadian Removal of, or puncturing the muffler, provincial laws may prohibit the following baffles, header pipes or any other acts or the causing thereof: ( ) The component which conducts exhaust...
Oxygenated Fuels Some conventional gasolines are being The following are the EPA-approved blended with alcohol or an ether percentages of oxygenates: compound. These gasolines are collectively referred to as oxygenated ETHANOL (ethyl or grain alcohol) 10% fuels. To meet clean air standards, some by Volume areas of the United States use oxygenated You may use gasoline containing up to...
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Oxygenated Fuels METHANOL (methyl or wood alcohol) Fuel system damage or performance 5% by Volume problems resulting from the use of an You may use gasoline containing oxygenated fuel containing more than the methanol containing up to 5% methanol percentages of oxygenates mentioned by volume as long as it also contains above are not covered under warranty.
Consumer Information This section contains information on your Authorized Manuals ......186 warranty and how to get an official Honda Warranty Coverage ......189 service manual. Warranty Service ........190 Contacting Honda ........ . 191 Your Honda Dealer ......
) used by your authorized Honda dealer is available from Helm, Inc. Also available, but not necessary, to service your model is the Honda Common Service Manual (Publication No. 61CM001 ), which explains theory of operation and basic service information for various systems common to all Honda motorcycles, motor scooters and ATVs.
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Order On-Line: www.helminc.com Order Toll Free: 1-888-CYCLE93 (1-888-292-5393) (NOTE: For Credit Card Orders Only) Monday Friday 8:00 AM 6:00 PM EST By completing this form you can order the materials desired. You can pay by check or money order, or charge to your credit card. Mail to Helm, Inc. at the address shown on the back of this order form (USA only).
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NOTE: Dealers and Companies please provide dealer or company name, and also the name of the person to whose attention the shipment should be sent. Customer Name Attention Street Address - No P. O. Box Number Apartment Number City State Zip Code Daytime Telephone Number Check or money order enclosed payable to Helm Inc.
Please read the Warranties Booklet given Almost all of your warranty coverage can to you by your Honda dealer at the time of be extended through the Honda Protection purchase. Be sure to keep your Honda Plan.
If you aren’t satisfied with your your motorcycle, call the service dealer’s handling of the situation, we department of your Honda dealer. Make suggest you discuss your problem with the an appointment for an inspection and appropriate member of the dealership’s diagnosis.
If you wish to comment on your experiences with your Honda or with your We will likely ask your Honda dealer to dealer, please send your comments to the respond, or possibly acknowledge your following address: comments directly.
The sales department offers the Honda familiar with the organization of your Protection Plan to extend almost all of Honda dealer so you can utilize the full your warranty coverage. range of services available. Your Honda dealer can inform you about...
ATV rider training is available from the enjoyment from owning your Honda is to Specialty Vehicle Institute of America join the Honda Rider’s Club of America with the purchase of a new Honda ATV. (HRCA). Your purchase of a new A subscription to Honda Red Rider, motorcycle, scooter or ATV from a bi-monthly insider’s magazine for all...
National Highway Washington, D.C. area) or write to: Traffic Safety Administration (NHTSA) NHTSA, U.S. Department of in addition to notifying American Honda Transportation, Washington, D.C. 20590. Motor Co., Inc. You can also obtain other information If NHTSA receives similar complaints, it...
Table of Contents The following presents the contents of Tripmeter Reset Knob ......21 each section of your owner’s manual. BEFORE RIDING ....... . 23 MOTORCYCLE SAFETY ....Are You Ready to Ride ..... . 24 Important Safety Information ....
BASIC OPERATION & RIDING ..33 SERVICING YOUR HONDA ... . 49 Safe Riding Precautions ......34 Bef ore You Service Your Honda Starting & Stopping the Engine .... . 35 The Importance of Maintenance ... . 52 Preparation .........
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Table of Contents SERVICING YOUR HONDA (cont’d) Chassis Service Procedures Suspension ..........98 Brakes ........... 101 Fluids & Filters Tires ............106 Fuel ............73 Side Stand ..........113 Engine Oil ..........76 Drive Chain ..........
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If You Have a Flat Tire ......148 Your Honda Dealer ......192 If a Fuse Blows ........156 The Honda Rider’s Club ..... 193 If You Crash ......... 160 Reporting Safety Defects ....194 If You Lose Your Key ......
Honda. You’ll also find space to record important notes. The engine of your Honda can be the most expensive component to repair. Proper maintenance, especially the use of the recommended fluids and filters, prevents premature wear and damage.
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Quick Reference VIN/Frame No. Engine No. Frame No. Ignition Key No. Color Label Owner’s Name Address City/State Phone Dealer’s Name Address City/State Phone Service Mgr. Quick Reference...
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API Service Classification SG or higher except oils labeled as energy conserving on the circular API service label, SAE 10W-40, JASO T 903 standard MA, Pro Honda GN4 or HP4 (without molybdenum additives) 4-stroke oil or an equivalent motorcycle oil Maximum...
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Do you have a question about the CB250 Nighthawk and is the answer not in the manual?
Questions and answers
Two of my turn signals were broken and hanging down but worked. I bought new turn signals that were led and replaced them. Understand now can't do that. I bought regular signal lights and a new turn signal relay. Still don't work??????
Possible reasons why the new turn signal lights and relay are not working on your Honda CB250 Nighthawk:
1. Flasher Relay Issue – The new Tridon flasher relay may be faulty or not compatible with the bike’s electrical system.
2. RPM-Related Voltage Fluctuation – The turn signals stop flashing above 4,000 RPM, which could indicate an issue with voltage regulation or wiring.
3. Wiring Problems – A damaged or loose connection in the wiring may be affecting signal operation.
4. Battery or Charging System Issues – If the battery or charging system is not providing stable voltage, the relay may not function properly.
5. Electrical Load Capacity – Installing aftermarket electrical components that exceed the bike’s electrical system capacity can cause failures.
6. Grounding Issue – Poor grounding can prevent the turn signals from functioning correctly.
To fix the issue, check the relay, wiring connections, battery voltage, and grounding points. If necessary, test the system with a stock relay to see if the problem persists.
This answer is automatically generated