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A.J.S. 18S - User Manual

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INSTRUCTION BOOK
A
J
S
1956
SINGLE CYLINDER
MODELS
18S
350 c.c.
16MS
Issued by:
A.J.S. MOTOR CYCLES LONDON S.E.18
Proprietors : ASSOCIATED MOTOR CYCLES LTD.
www.ajs-matchless.info
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Summary

Safety on the Road

Technical Data and Specifications

Capacities

Technical specifications for engine, gearbox, and fuel tank capacities.

Carburetter Settings

Details on main jet, pilot jet, needle position, and choke size for carburetters.

Compression Ratios

Compression ratios for 350 and 500 c.c. models.

Ignition Specifications

Ignition timing, point gap, and type for Touring and Trials models.

Gearbox Ratios

Gear ratios for Touring and Trials models.

Gear Ratios Breakdown

Detailed gear ratios for Touring and Trials models based on engine sprocket size.

Lighting Specifications

Details of bulbs used for headlamp, pilot lamps, and rear lamp.

Oversize Parts Details

Information on oversize parts like pistons, rings, and their dimensions.

Sparking Plug Data

Specifications for K.L.G. FE80 sparking plugs, including thread and gap.

Valve Timing

Valve timing details for inlet and exhaust, and camshaft timing marks.

Controls and Operation

Handlebar Controls

Operation of throttle, air, clutch, front brake, lighting, ammeter, horn, and dip switch.

Pedals and Kick-starter

Operation of rear brake pedal, gear change pedal, and kick-starter mechanism.

Tank and Lever Access

Location and function of petrol tank, oil tank filler caps, and footrests.

Riding and Maintenance

Fuel and Operation

Fuel supply, starting from cold, stopping the engine, and riding the motorcycle.

Driving Techniques and Precautions

Advice on gear changes, clutch use, braking, and handling the motorcycle.

Lubrication Guide

Lubricant Recommendations

Recommended oils and greases for engine, gearbox, hubs, forks, and chains based on temperature.

Engine Oil System and Checks

Details on the lubrication system, oil pump, circulation, oil tank, and checking oil circulation.

Component Lubrication

Instructions for lubricating magnetic filter, oil feed, valve stems, gearbox, hubs, and brake drum bearings.

Various Lubrication Points

Procedures for lubricating chains, brake expanders, brake rod joints, pedals, speedometers, steering heads, and cables.

Lubrication Chart

Component Lubrication Locations

Diagram showing locations for engine oil, hydraulic fluid, grease, and molten grease on the motorcycle.

Maintenance Schedule

Periodical Maintenance Schedule

Recommended maintenance tasks based on daily, weekly, 500, 1000, 3000, 5000, and 10000 mile intervals.

Engine Overhaul Procedures

Engine Access and Fuel Tank Removal

Instructions for accessing engine components by removing the petrol tank.

Rocker Box and Cylinder Head Work

Procedures for removing and replacing rocker box, cylinder head, and associated parts.

Decarbonisation and Valve Servicing

Steps for decarbonisation, removing cylinder head, valves, guides, and valve grinding.

Cylinder Barrel and Piston Procedures

Instructions for replacing cylinder head, and removing/replacing cylinder barrel and piston.

Carbon Removal and Valve Grinding

Methods for removing carbon deposits and performing valve grinding.

Cylinder Head and Barrel Replacement Steps

Detailed steps for replacing cylinder head and barrel, including gasket and bolt tightening.

Piston, Barrel, and Camshaft Work

Procedures for removing/replacing piston, cylinder barrel, and understanding camshaft contour.

Camshaft and Valve Timing

Details on camshaft contour, and valve timing for standard and trials models.

Tappet Adjustment

Adjusting Tappets

Step-by-step procedure for adjusting tappet clearances on 350 and 500 models.

Ignition Service

Ignition Timing Adjustment

Procedure for setting ignition timing, including contact breaker point checks and adjustments.

Engine Service Operations

Oil Pump and Cylinder Services

Procedures for removing/replacing oil pump plunger, and details on oversize parts and re-boring cylinders.

Sparking Plug Removal

Instructions for safely removing and replacing sparking plugs to avoid thread seizure.

Carburetter Service

Carburetter Function and Adjustment

Explanation of carburetter operation, main jet, needle, pilot jet, and adjustment for idling.

Throttle Grip and Air Filter Servicing

Procedures for adjusting twist grip, servicing the air filter element, and carburetter tuning tips.

Transmission Service

Gearbox Description and Operation

Overview of the gearbox, its internal layout, gear selection, and kick-starter mechanism.

Gearbox Component Removal and Reassembly

Procedures for removing/replacing kick-starter case, end plate, and reassembling the gearbox.

Front Chaincase, Clutch, and Drive Assembly

Steps for removing and refitting the front chaincase, clutch assembly, and dynamo chain.

Front Chaincase and Clutch Refitting

Instructions for refitting the front chaincase and clutch assembly, including dynamo chain fitting.

Clutch and Chaincase Assembly

Detailed steps for fitting front chain, clutch plates, springs, and outer chaincase.

Clutch Spring Adjustment

Clutch Spring Adjustment Procedure

Steps for adjusting clutch spring nuts to cure clutch slip and ensure proper engagement.

Clutch Operating Mechanism

Clutch Mechanism Adjustment

Instructions for adjusting the clutch operating mechanism for correct free movement.

Clutch Cable Removal and Replacement

Procedures for removing and replacing the clutch control cable.

Chain and Dynamo Adjustment

Front and Rear Chain Adjustment

Procedures for adjusting front and rear chain tension, with notes on rear chain alignment.

Rear Chain Removal;Refitting & Dynamo Chain

Steps for removing/refitting rear chain, and adjusting dynamo chain tension.

Magneto and Shock Absorber

Magneto Chain Adjustment

Procedure for adjusting the magneto driving chain tension.

Engine Shock Absorber

Description of the engine shock absorber's function and assembly order.

Fork & Frame Service

Steering Head Adjustment

Steps for adjusting steering head bearings to eliminate play and ensure free turning.

Teledraulic Front Forks Overview

Introduction to Teledraulic front forks, their telescopic action, and hydraulic dampers.

Front Fork Component Removal

Procedures for topping up fork oil and removing the complete front fork assembly.

Fork Slider and Inner Tube Removal

Instructions for removing fork sliders and inner tube assemblies.

Rear Suspension & Chassis

Teledraulic Rear Suspension Legs

Description of the rear sprung frame and Teledraulic rear suspension legs, including fluid type and quantity.

Fork Leg Oil Check and Chassis Components

Procedure for checking fork leg oil, and notes on prop stand, centre stand, and rear chain guard removal.

Oil Tank Service

Oil Tank Removal Procedure

Step-by-step instructions for removing the oil tank, including disconnecting pipes and fuel lines.

Wheels and Brakes

Front Wheel Removal and Refitting

Procedures for removing and refitting the front wheel, including brake cable and spindle nut.

Rear Wheel Removal and Refitting

Steps for removing and refitting the rear wheel, including mudguard and speedometer connections.

Rear Wheel Removal (Trials Model)

Specific instructions for removing the rear wheel on Trials models.

Wheel Bearings and Adjustment

Wheel Bearing Adjustment

Method for adjusting wheel bearings, ensuring correct end play and lubrication access.

Front Wheel Bearings Service

Front Wheel Bearing Dismantling

Detailed steps for dismantling front wheel bearings, including removal of components.

Rear Wheel Bearings Service

Rear Wheel Bearing Dismantling

Detailed steps for dismantling rear wheel bearings, including speedometer gear box and brake drum components.

Brake Adjustment

Front Brake Adjustment

Procedure for adjusting the front brake, including minor adjustments via cable adjuster.

Rear Brake Adjustment and Front Cover Plate

Steps for adjusting rear brake and correctly positioning the front brake cover plate.

Brake System Details

Brake Shoes, Pedal, and Drums

Details on brake shoes, pedal adjustment, brake drums, and shoe adjustment.

Brake Shoe Adjustment

Methods for adjusting brake shoes to compensate for lining wear.

Brake Shoe Centralisation and Tyre Service

Procedures for centralising brake shoes and advice on tyre service and maintenance.

Tyres and Wheels

Tyre Service and Pressures

Guidance on tyre service, pressures, and avoiding wear from harsh driving.

Tyre Removal and Fitting

Step-by-step instructions for removing and fitting tyres and inner tubes.

Electrical Service

Ignition System and Contact Breaker

Details on magnetos, contact breaker points, and their adjustment and maintenance.

Sparking Plug Service

Instructions for checking, cleaning, and setting K.L.G. sparking plugs.

Dynamo, A.V.C. Unit, and Battery

Information on dynamo inspection, removal, testing, and the A.V.C. unit.

Dynamo Removal and Battery Service

Procedures for removing the dynamo and servicing the battery, including removal and checks.

Lighting and Accessories

Battery Service and Electrolyte Checks

Guidance on battery electrolyte level, specific gravity, charging, and maintenance.

Headlamp and Pilot Lamp Service

Description of the headlamp, pilot lamps, their bulbs, mounting, and removal of the light unit.

Horn, Connectors, and Terminals

Information on horn switch, snap wire connectors, and electrical terminals.

Troubleshooting and Care

Engine, Steering, and Tyre Issues

Troubleshooting for starting, misfires, power loss, overheating, stalling, consumption, steering, and tyre wear.

Overheating, Stalling, and Consumption Issues

Troubleshooting for engine overheating, sudden stopping, excessive oil/petrol consumption.

Machine Cleaning and Chromium Care

Methods for cleaning the machine's surfaces and maintaining chromium plated parts.

Repairs and Service Information

Repair Procedures and Customer Correspondence

Guidelines for repairs, estimates, customer communication, and ordering parts.

Proprietary Fittings and Manufacturers

Information on proprietary fittings, their guarantees, and a list of manufacturers.

Service and Legal Information

Service Department and Legal Requirements

Details on service department, driver responsibilities, insurance, and licences.

Machine Registration and Lighting Laws

Information on registering a new machine, number plates, licence discs, ignition suppressors, speedometer, and lamp regulations.

Free Service Scheme

Initial Free Service and Inspection

Details on entitlement to a free service at 500 miles or three months, including inspection points.

Spare Parts and Guarantee

Spare Parts Information and Ordering

Guidance on purchasing spare parts, stockists, correspondence, payment, and part numbers.

Guarantee and Instruction Books

Information on the machine's guarantee and availability of instruction books.

Tools and Equipment

Standard Tool Kit

List of tools included in the standard tool kit supplied with the machine.

Optional Equipment and Spares

Details on optional equipment, spares lists, gasket sets, and badges.

Tool Kit Contents

Guarantee Policy

Guarantee Terms and Conditions

Detailed guarantee terms, exclusions, and conditions for motorcycles and sidecars.

Guarantee Notice and Agent Policy

Notice regarding agents and their authorised business practices related to warranties.

A.J.S. 18S Specifications

General IconGeneral
BrandA.J.S.
Model18S
CategoryMotorcycle
LanguageEnglish

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