BMW Isetta Owners Handbook
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Cllatl. ~ ... pnf--tu '~ ........ ~ ... ,~ - " .-- • , BRITISH • OWNER ' S HANDBOOK • I CONTENTS Page ' Alphabetical index - 4-5 Introduction 6 Technical data 7-9 Instrumentation and Control layout 10-11 Registration for police and customs authorities, data for filling stations and workshops - 12 Controls and running-in instructions 12-16 Care of coachwork - 16-17 T echnicaJ. mainrt:enance - 18-28 M:inor inspecltiions and adjustments - 29-35 Maintenance survey 35-36 Maintenance chart - Pull out PRINTED IN GREAT BRITAIN 3 Figure Page Figure Page INDEX 22 ALPHAB~~[ICAL 19 36R Tool kit 16 Pedal shaft 19 35.,, Polishing 17 25/26 Torque arm '!-.¥$;, Track (tread) front 8 Rear wheels 8 Track (tread) rear 8 Reflectors 27 Transmission 7 Road performance 8/9 Transmission oil change 18 3t: 30 59 8 Page Figure Page Figure Rocker arm Tyres --;: 30 60 23 4,0'' Adjuster plate, chain 33 70 Feeler gauge 30 58 Rocker-box cover-gasket Tyre pressure 14 23 41 Adjuster bolt, brake 34 76 Fill-up data 9 Running-in Tyre wear Running-in speeds 14 Air cleaner ;24 42/43 Float chamber 32 69 Universal joint, steering 19 '~6L Axle construction 8 Folding hood front rail 15 16 Seat adjustment 13 13 Front wheel bearings 24 44 29 Valves 29/31 58/61 Battery maintenance ·22/23 38/39 Seat removal 17 Fuel consumption 8, 15/16 29 54/56 Valve adjustment 29/31 58/61 Blower wheel 30/31 Sparking plugs 59 Fuel line control tap 13 6 9, 14 Valve adjusting screw 29/31 Bore 7 Speed limits 59 Fuel tank 9, 12 4 7 Valve checking 29/30 Brakes 8, 33/34 74/76 Starter 58/59 Fuses 25/26 47 13 7 Valve clearance 29 Brake adjustment 34 75/76 Starter choke lever 59 13 7 Valve stem 30 Brake drum 33/34 Gear changing 13 8 Starter switch 14/15 13 7 Ventilation 14/15 Brake fluid 34 74 Gear lever 13 8 Starting 32 67 8 Volume control screw Brake master cylinder 34 74 Greasing 19 33/37 Steering 19 Brake pedal 34 Steering lubrication Washing 16/17 23/28 Headlamps 26 48/49 28 52 Brake shoes 34 75/76 Stop-tail lamps Weight 8 Height, overall 8 Stroke 7 8 Canvas hood 15 16 Wheelbase Horn 27 Suspension 8 15 17/21 Canvas hood maintenance 17 27 Wheel changing Swing arm 19 15 18 Capacity 7 Ignition 30/31 62/65 Wheel cover plate 15 17 Carburettor 31/32 66/69 Ignition capacitor 27 Tail lamp 28 52 Wheel spare 8 Carburettor adjustment 31/32 66/68 Ignition coil 27 50 Technical data 7/9 Width, overall 13, 28 12, 53 Care of coachwork 16/17 23/26 Ignition key 13 7 Technical maintenance 18/23 30/44 Windscreen wiper 29 56 Care of glass 17 28 Ignition switch 13 7 Terminal block 27 Wire brush 28 Pull out Carrying capacity 8 Ignition test lamp 31 65 Three-way fuel tap 13 6 Wiring diagram Chain 32/33 Ignition timing 31 Chain case 33 70/72 Ignition warning light 27 Cliiunois leathering 16 24 Instrumentation and control layout 10/11 Chassis frame 8 Intake valve 29 Choke lever 13 7 Cteaning, light metal parts 17 26 Jack 15 20/21 Climbing ability';..,;, , 8 Jets 31/32 Clutch ""'·'~" 7, 33 Kerb weight 8 Clutch adjustment 33 73 King pins 19 Clutch pedal clearance 33 73 Compression ratio 7 Lamps 25/28 45/52 Contact breaker gap 31 62/63 Length, overall 8 Contact gauge 31 62 Lighting switch 13 9 Contact plate 31 64/65 Locating pins 30 61 Contact point lock screw 31 64 Lubrication 7/9, 18/24 30/37 Control layout 1 Lucas electrics 21/23, 25/28 Cylinder head Dipper 13,25 10 Main dimensions 8 Directional signal switch 13, 25 11 Maximum speed 8 Door Hinge pins 19 37 Number plate lamp 27 51 Eccentric adjusting screw 31 63 Electrical equipment 7, 21/28 Oil capacity 9 Electrode gap 29 57 Oil change 18 30/32 Engine position 7 Oil dipstick 12 5 Engine power 7 Oil drain plug 18 ~0 Exhaust valve 29/30 Oil1evel, chain drive 18 32 4 5 SERVICING INTRODUCTION Isetta Service Stations art' organised in trained at the Isetta factory or by factory the form of a wide net of Isetta Agencies. representatives. Each' of these Service They are always at your service. Stations is equipped with proper tools At these Service Stations you will find and has a complete stock of genuine spare technicians wh9 have been specially parts. Technical data : Engine: J3MW single-cylinder, four stroke engine, blower cooled 300 c.c. engine In the following pages you will find The British-manufactured I~etta is a new Bore 72 mm (2.83 in.) described in non-technical language solution to motoring problems. Its Stroke 73 mm (2.87 in.) everything. the Isetta driver needs to manoeuvrability in dense traffic; the ab Capacity 295 c.c. (18.30 cu. in.) ·know about his vehicle. solute weather-protection which at the Compression 6.8 to 1 Where technical details do occur, such as same time permits draught-free oren-alf on the succeeding two pages, they are driving by means of the folding sun roof; Power 13 bhp at 5,200 rpm included mainly for service stations and its comfortable interior dimensions; its Valves Overhead, in V -arrangement for the more technically-minded Isetta quick acceleration and considerable top· Valve timing measured at .08 in. in valve clearance : .. owner. speed given by a high performance air Intake opens 6° before T.D.C . cooled engine unit; and above all its Intake closes 34 o after B.D.C. tremendous mileage; these are advantages Exhaust opens 34 ° before B.D.C. that will certainly suit new trends in Exhaust closes 6° after T.D.C. motoring. "' Lubricating system Force feed lubrication You will find the J~S~J:~ .:;tri,.easy-to-handle runahout, suitablw;~~~B;~,:~:l.ity and toi.Intrry Single plate dry clutch driving, for field-tra2k ahd modern higp Right hand side, transverse .... 1tth~:iseat way alike. Furthermore, excellem road · 12 volt dynamo starter Noris, LA:'i~/BO;~: holding and a brake s)i;stem of r~f?arkable 12 volt/130 watt generator with voltage regulator efficiency ensure a maximum 6f driving equipment safety. >.4~~;·;~:;:~iJ~/n;~ ". ~~~¥-ucas 12 volt/32 amps battery and lighting equipment Sparking plug ./'Lodge CC14 - L 9' 0 ..- . Carburettor Bing starter carburettor 1/22 Transmission : Gearbox four forward speeds and re-&erse Gear ratios : , . , Overall gear ratios : 1st 10.05 23.21 2nd 5.17 ;... 12.14 3rd 3.54 8.17 4th 2.70 6.1 6 Reverse 12.15 30.0 7 Transmission continued Fill-up data : Fuel tank 2.8 Imp. gal. = 3.4 U.S. gal. with reserve fuel supply Final drive Final drive 2.31 (13/30 teeth) through transverse of .65 Imp. gal. (.8 U.S. gal.) resilient mounted drive shaft and totally enclosed fully adjustable chain drive in oil bath. Oil capacity, engine 3.1 Imp. pints = 3.6 U.S. pints Oil capacity, gearbox 1 Imp. pint = 1.2 U.S. pints Chassis frame: Rigid tubular chassis frame constructed by Rubery Oil capacity, chain drive .44 Imp. pints = .55 U.S. pints Owen & Co. Limited. Tyre Pressure: Four Wheels 16 lbs. Front and Rear Axle layout and suspension : Three Wheels Front: 16 lbs. Rear: 28 lbs. Front wheels Independent front wheel suspension, swingmg arms, Fuels and lubricants: coil springs and shock absorbers. Fuel Regular or Premium grade Camber 1t deg. King pin inclination 5', in castor 12 o, toe-in Lubricant See lubrication chart 4 to 5 mm = 5/32 in. to 3/16 in., measured on the Recommended Speeds,: (m ph) rim borders, front and rear. 1st 2nd 3rd 4th Rear Wheels Suspension by quarter elliptic leaf springs and During running in 9 18 28 37 telescopic shock absorbers.