Honda Nighthawk CB 750 1999 User Manual

Explains symbols for warnings and cautions.

Explains this manual's relation to the Common Service Manual.

Importance of following maintenance schedule for peak condition and emissions.

How the manual is organized into sections for easy navigation.

Explains how to interpret illustrations, symbols, and procedures.

Explains common symbols used for specific service procedures.

Covers hazards like carbon monoxide, gasoline, and hot components.

Advises on safe handling and disposal of used oil.

Warns about potential asbestos fibers in brake dust.

Cautions about damage from spilled brake fluid and keeping it from children.

Hazards of coolant, including flammability and toxicity.

Precautions for pressurized shock absorbers and nitrogen release.

Hazards of battery gases and electrolyte, emphasizing protective measures.

Shows locations of frame, engine, VIN, and carburetor identification numbers.

Details dimensions, frame, and engine specifications.

Specifications for frame type, suspension, and engine details.

Specifications for carburetors, clutch, and transmission.

Details ignition, starting, charging, and lighting system specs.

Engine oil capacity, recommended types, and viscosity charts.

Lists carburetor identification and main jet sizes for different models.

Details valve clearance, cam lobe height, and valve guide dimensions.

Piston OD, ring groove clearance, and end gap specifications.

Connecting rod and crankshaft bearing clearances.

Gear ratios, clearances, and shift fork dimensions.

Clutch lever free play, disc thickness, and centrifugal clutch specs.

Coolant capacity, cap pressure, and thermostat specs.

Final drive oil capacity and backlash.

Tire tread depth, cold pressure, and axle/rim runout.

Fork spring length, oil level, and air pressure.

Shock absorber spring length and damper gas pressure.

Brake fluid, lever free play, and disc/caliper dimensions.

Drum ID, lining thickness, and pedal height.

Alternator resistance, regulator voltage, and battery specs.

Spark plug type, gap, ignition timing, and coil resistance.

Fuse ratings, bulb wattages, and indicator types.

Starter motor O.D. and brush tension.

Torque values for common bolts and nuts.

Torque values for engine mounting and cylinder head components.

Torque values for crankcase, frame, and fuel systems.

Torque values for front/rear suspension and wheels.

Torque values for fender, exhaust, and engine mounting bolts.

Lists specialized tools for maintenance and lubrication.

Lists tools for engine, clutch, and transmission work.

Lists specialized tools for suspension and brake systems.

Lists tools for electrical system diagnosis and repair.

Specifies materials for engine lubrication points.

Specifies grease and locking agents for frame components.

Illustrates routing for meter, clutch, choke, and switch wires.

Shows routing for throttle, brake, and main wire harnesses.

Illustrates routing for regulator, clutch cable, and alternator wires.

Shows routing for turn signal, ignition control, and starter relays.

Illustrates routing for ignition pulse, side stand, and neutral switch wires.

Shows routing for fuel and emission control hoses.

Explains EPA/CARB standards and the purpose of emission controls.

Describes routing of crankcase vapors to the combustion chamber.

Lean carburetor settings and idle speed adjustment.

Pulse secondary air supply system and PAIR valve function.

EVAP canister function and fuel vapor routing.

Prohibition of tampering with noise control systems.

Location and purpose of emission labels.

General precautions for working with the frame, panels, and exhaust.

Common issues like excessive noise and poor performance.

Step-by-step procedure for removing and installing the exhaust system.

How to remove and install the motorcycle seat.

Procedure for removing and installing side covers.

Steps for removing and installing the rear fairing.

Procedure for removing and installing the fuel tank.

General notes on maintenance procedures and data sources.

Identifies locations of parts for maintenance access.

Pinpoints components for various maintenance checks and adjustments.

Lists items to check/service at different intervals and odometer readings.

Steps for removing, inspecting, and installing the air cleaner.

Notes on synchronizing carburetors using specific plugs and screws.

General safety and notes on servicing the oil pump.

Lists common problems like low oil level and pressure.

Visual representation of the engine oil flow.

Procedure for removing and installing the oil pump assembly.

Steps for taking apart and reassembling the oil pump.

Procedure for removing and installing the oil cooler.

How to check engine oil pressure using a gauge.

Safety and notes on fuel system components.

Diagnosing issues like engine won't start, lean/rich mixture, and stalling.

Steps to remove and install the air cleaner housing.

Procedure for removing and installing the carburetors.

Detailed steps for removing carburetors, including fender removal.

Illustrates how carburetors are interconnected and separated.

Specific steps for separating carburetor pairs and individual units.

Exploded view of carburetor components for disassembly.

Steps for disassembling vacuum chamber, float chamber, and pilot screws.

Illustrates how carburetors are interconnected.

Steps for assembling carburetors and mounting brackets.

Steps for adjusting pilot screws for idle speed.

Further steps for adjusting pilot screws for optimal engine speed.

Procedure for adjusting carburetors for high altitude operation.

Steps for returning carburetors to low altitude settings.

General notes and components requiring engine removal.

Exploded view of engine mounting points and related components.

Detailed steps for removing the engine from the frame.

Notes on camshaft service and hydraulic tappets.

Diagnosing problems related to cylinder head and piston.

Exploded view of camshaft removal and installation components.

Steps for removing and installing camshafts and related parts.

Detailed procedure for removing the camshafts.

Detailed procedure for installing the camshafts and aligning timing marks.

Final steps for camshaft installation, including torque specs.

Inspecting and installing hydraulic tappets.

Exploded view of cylinder head removal and installation.

Steps for removing and installing the cylinder head.

Exploded view of cylinder head components.

Steps for disassembling the cylinder head, including valve components.

Exploded view of cylinder, piston, and rings.

Steps for removing/installing cylinders, pistons, and rings.

Notes on clutch maintenance and potential issues.

Common problems with clutch and gearshift operation.

Exploded view of clutch cover components.

Steps for removing the clutch cover and clutch lifter.

Exploded view of clutch assembly components.

Procedure for removing the clutch center lock nut using special tools.

Exploded view showing the order of clutch component installation.

Steps for installing clutch components and the outer clutch.

Procedure for installing and torquing the clutch center lock nut.

Steps for removing and installing the drive sprocket cover.

Exploded view of gearshift linkage components.

Steps for removing and installing the gearshift linkage and related parts.

Procedures for installing the gearshift linkage cover and spindle.

Steps for installing the neutral switch.

Overview of crankcase separation and parts to remove.

Common problems like noise, hard shifting, and vibration.

Exploded view of countershaft bearing cover components.

Steps for removing and installing the countershaft bearing cover.

Exploded view showing crankcase separation.

Steps for separating the crankcase halves.

Exploded view of transmission components for removal.

Steps for removing and installing the mainshaft/countershaft assembly.

Exploded view of mainshaft components.

Exploded view of countershaft components.

Exploded view of crankshaft and connecting rod removal.

Steps for removing connecting rod bearings and alternator shaft nut.

Exploded view of alternator shaft components.

Steps for assembling the alternator shaft with new bearings and seals.

Guide for selecting main journal bearings based on case and journal codes.

Guide for selecting connecting rod bearings based on rod and crankpin codes.

Exploded view of crankshaft and connecting rod installation.

Steps for installing crankshaft, bearings, and connecting rods.

Exploded view of crankcase assembly.

Steps for installing crankcase bolts and sealing washers.

Instructions for applying sealant to crankcase mating surfaces.

Safety precautions regarding brake dust and supporting the motorcycle.

Common problems with steering, wheel tracking, and suspension.

Exploded view of handlebar and related components.

Steps for removing and installing the handlebar and controls.

Procedure for removing and installing the front wheel.

Exploded view of front wheel components.

Exploded view of front fork removal and installation components.

Steps for removing and installing the front forks.

Exploded view of front fork components for disassembly.

Steps for disassembling the front fork components.

Exploded view of front fork assembly components.

Steps for assembling the front fork components.

Exploded view of steering stem components.

Steps for removing and installing the steering stem and bearings.

Safety precautions regarding brake dust and supporting the motorcycle.

Common problems with soft/hard suspension and wheel tracking.

Exploded view of rear wheel removal components.

Steps for removing and installing the rear wheel and drive chain.

Exploded view of rear wheel components.

Steps for disassembling and assembling the rear wheel hub and bearings.

Exploded view of rear shock absorber mounting.

Exploded view of shock absorber components.

Procedures for removing and installing shock absorber springs and seats.

Exploded view of swingarm mounting and related parts.

Exploded view of swingarm components.

Procedures for pressing in ball and needle bearings for the swingarm pivot.

Safety precautions regarding brake dust and fluid.

Diagnosing problems like soft/hard levers, dragging, and squeaks.

Steps for replacing front brake pads, including caliper piston retraction.

Procedure for removing and installing the front brake master cylinder.

Steps for disassembling and assembling the front master cylinder.

Procedure for removing and installing the front brake caliper.

Steps for disassembling and assembling the front brake caliper.

Steps for disassembling and assembling the rear brake panel.

Procedure for removing and installing the brake pedal assembly.

Battery safety, charging system notes, and component inspection references.

Shows the location of charging system components.

Diagnostic steps for battery over/undercharging.

Steps for safely removing and installing the battery.

Procedure for checking battery current leakage.

How to check regulated voltage and amperage.

Checking the regulator/rectifier for continuity and resistance.

Detailed resistance measurements for the regulator/rectifier unit.

Measuring alternator coil resistance.

Steps for removing and installing the alternator.

Safety, diagnostic notes, and component checks for the ignition system.

Shows the location of ignition system components and wiring.

Diagnostic steps for complete lack of spark.

Diagnosing issues affecting both ignition circuits.

Diagnosing issues affecting a single cylinder's spark.

Checks for proper side stand switch operation.

Procedures for inspecting ignition coils for resistance.

Detailed resistance checks for ignition coil primary and secondary circuits.

Procedure for checking ignition pulse generator resistance.

Steps for removing and installing the ignition pulse generator.

Procedure for checking and verifying ignition timing using a timing light.

Safety warnings and component inspection references for the starter system.

Shows the location of starter system components and wiring.

Diagnostic steps for a starter motor that won't turn.

Diagnosing issues when the starter works but the engine doesn't start.

Diagnosing issues with slow starter motor operation.

Diagnosing issues when the starter relay clicks but the engine doesn't crank.

Procedure for removing and installing the starter motor.

Exploded view of starter motor components.

Steps for disassembling and assembling the starter motor.

Steps for disassembling and assembling the starter clutch.

Safety notes for headlight bulbs and component inspection references.

Shows the location of lights, meters, and switches.

Procedure for replacing the headlight bulb and assembly.

Steps for replacing tail and brake light bulbs.

Steps for replacing turn signal bulbs.

Procedure for removing and installing the speedometer and tachometer.

Steps for disassembling and reassembling the meter assembly.

Procedure for checking tachometer operation and wiring.

Steps for removing and installing the side stand switch.

Procedure for checking and replacing the neutral switch.

Steps for removing and installing the ignition switch.

Diagnostic steps for starting issues.

Diagnostic steps for poor engine performance.

Diagnosing issues affecting low-speed and idle operation.

Diagnosing issues affecting high-speed performance.

Diagnosing issues like heavy steering and wheel wobble.

Diagnosing noisy hydraulic tappets.

Further checks for engine lacking power, including oil pressure.