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BSA D7 - User Manual

BSA D7
32 pages
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175 c.c. Silver Bantam.
175 c.c. Bantam de luxe.
Model D7.
INSTRUCTION MANUAL
www.ClassicCycles.org
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Summary

Fig. 1. The Controls

Motorcycle Controls Diagram

Diagram illustrating the motorcycle's controls and their locations.

TECHNICAL DATA

Engine Specifications

Details engine capacity, bore, stroke, compression ratio, and gaps.

Transmission Specifications

Covers gear ratios, clutch plates, chain size, and sprocket teeth counts.

Capacities and Wheels

Information on fuel tank, gearbox, forks capacities, and tyre specifications.

Carburetion and General Details

Carburettor details (Amal) and general motorcycle dimensions.

Tyre Pressure Adjustments

Guidance on adjusting tyre pressures based on rider weight.

TAKING OVER THE MACHINE

Handlebar Controls

Explanation of controls mounted on the handlebars, including throttle, brake, clutch, and horn.

Other Hand Controls

Description of controls like air control, petrol taps, and headlight switch.

DRIVING

Starting the Engine

Step-by-step instructions for starting the motorcycle's engine.

Engaging Gears and Moving Off

Procedures for engaging first gear, moving off, and changing gears up and down.

Selecting Neutral

How to shift the motorcycle into neutral gear between first and second.

Stopping the Engine and Gear Change Notes

Instructions for stopping the engine and tips for smooth gear changes.

Gearbox Usage and Riding Hints

Advice on using the gearbox effectively and general riding techniques.

RUNNING-IN

ROUTINE MAINTENANCE

Cleaning Procedures

Best practices for cleaning the motorcycle to maintain appearance and function.

Maintenance Schedule

Recommended maintenance checks at specific mileage intervals (weekly, 1000, 2000, 5000, 10000 miles).

ENGINE

Lubrication

Details on engine lubrication methods, oil mixture, and oil recommendations.

Ignition Timing

Explanation of ignition timing, contact breaker adjustment, and gap settings.

DECARBONISATION

Silencer Carbon Removal

Steps to clean carbon deposits from the silencer unit.

Cylinder Removal Procedure

Instructions for removing the cylinder head and barrel for maintenance.

Piston Inspection and Cleaning

Guidance on examining and cleaning the piston and its components.

Piston Ring Examination

How to check the condition and fit of piston rings.

Cylinder Head and Big End Bearing

Procedures for cleaning cylinder head and checking the big-end bearing.

Sparking Plug

Information on selecting, checking, and maintaining the sparking plug.

CARBURATION

Carburetter Adjustment and Settings

How to adjust and maintain the carburettor for optimal performance.

Carburetter Air Control Operation

Explanation of the air control's function for mixture enrichment during starting.

Air Cleaner Maintenance

Instructions for cleaning and maintaining the air filter.

KEY LUBRICATION POINTS

Oil Lubrication Points

Specifies points requiring oil lubrication and refers to the oil chart.

Grease Lubrication Points

Identifies points that require grease lubrication.

Engine Oil Application Points

Details points where a few drops of engine oil are needed.

TRANSMISSION

Front Chain Maintenance

Details on the front chain's operation, adjustment, and wear limits.

Rear Chain Care and Adjustment

How to clean, maintain, and adjust the rear drive chain.

Clutch Control Adjustment

Procedure for adjusting the clutch control mechanism for proper engagement.

Clutch Dismantling

Steps involved in dismantling the motorcycle's clutch assembly.

WHEELS

Gearbox and Hubs

Information on gearbox lubrication and hub bearing maintenance.

Front Wheel Removal

Instructions for safely removing the front wheel.

Rear Wheel Removal

Steps for removing the rear wheel from the motorcycle.

Rear Chain Adjustment Details

Detailed instructions on adjusting the rear chain tension.

Brake System Adjustment

How to adjust the front and rear brakes for optimal performance.

Brake Shoe Replacement

Procedure for removing and replacing brake shoes.

STEERING AND SUSPENSION

Front Fork Oil and Steering Head Adjustment

How to service front forks and adjust the steering head bearings.

Rear Suspension Servicing

Information on rear suspension units and their maintenance.

THE ELECTRICAL SYSTEM

Emergency Starting

Method for starting the engine in emergency situations.

Battery Maintenance and Care

Guidelines for checking electrolyte levels, charging, and terminal maintenance.

Running Without a Battery

Precautions and procedures if operating the motorcycle without a battery.

Generator Unit

Details on the generator unit, its components, and required maintenance.

Contact Breaker and Generator Removal

Procedures for removing the contact breaker and generator units.

Horn and Headlight Adjustment

How to adjust the horn and replace headlight bulbs.

Headlight Aiming

Method for checking and adjusting the headlight beam alignment.

Rear Lamp and Stop Light Switch

Information on rear lamp operation and stop light switch maintenance.

Bulb Types

List of bulb types and their specifications used in the motorcycle.

Wiring Diagram

Schematic diagram of the motorcycle's electrical system wiring.

BSA D7 Specifications

General IconGeneral
Front SuspensionTelescopic forks
IgnitionMagneto
Transmission4-speed
Rear SuspensionTwin shock absorbers
BrakesDrum
Fuel SystemCarburetor
Brakes (Front)Drum
Brakes (Rear)Drum

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