Segment:
Microcar, economy vehicle, city car
Target Audience:
Post-war European consumers seeking affordable personal transportation.
Competitors:
Fiat 500 Topolino, Messerschmitt KR200, Heinkel Kabine, Goggomobil.
Unique Selling Proposition:
Forward-opening single door, compact size, excellent fuel economy, affordability.
Design Philosophy:
Maximizing interior space within a minimal footprint, ease of operation.
Engine:
All aspects including diagnosis, removal, installation, overhaul, tuning.
Fuel System:
Carburetor, fuel pump, fuel lines, fuel tank servicing and adjustment.
Ignition System:
Distributor, coil, spark plugs, timing, troubleshooting.
Cooling System:
Radiator, fan, thermostat, water pump, hoses, coolant specifications.
Exhaust System:
Muffler, exhaust pipe replacement and repair.
Transmission:
Gearbox overhaul, clutch operation, lubrication, adjustments.
Drivetrain:
Rear axle, drive shafts, universal joints.
Brakes:
Hydraulic system, brake shoes, drums, master cylinder, wheel cylinders, adjustments.
Steering:
Steering column, linkage, adjustments, wear checks.
Suspension:
Front and rear suspension components, shock absorbers, bushings, alignment.
Electrical System:
Wiring diagrams, battery, generator, starter motor, lighting, switches, horn.
Bodywork:
Door mechanisms, hinges, locks, interior trim, exterior panels, glass replacement.
Chassis:
Frame inspection, rust repair, body mountings.
Maintenance:
Routine servicing, lubrication points, filter changes, tune-ups, pre-delivery inspections.
Troubleshooting:
Systematic diagnostics for common and uncommon problems, symptom-based troubleshooting guides.
Repair:
Step-by-step repair instructions for all major mechanical and electrical components.
Overhaul:
Complete engine, gearbox, and differential rebuild procedures.
Diagnostics:
Component testing, electrical circuit tracing, mechanical adjustments.
Specifications:
Torque values, clearances, gap settings, fluid capacities, electrical resistance.
Depth:
Comprehensive, covering basic maintenance to complete engine rebuilds and advanced electrical diagnostics.
Detail Level:
Detailed photos and exploded diagrams for clarity in procedures.
Engine Code Family:
BMW 700 (Single Cylinder variants)
Displacement Cc:
Approx. 247cc (early models), 298cc (later models)
Configuration:
Single-cylinder, four-stroke
Cooling System:
Air-cooled
Horsepower Hp:
Approx. 10-13 hp (depending on variant)
Torque Lb-Ft:
Approx. 14-17 lb-ft (depending on variant)
Carburetor Type:
Solex (specific model likely detailed in manual, e.g., Solex 26/30)
Fuel Type:
Unleaded gasoline
Oil Grade:
API SE/SF or equivalent (e.g., 10W-30, 20W-50 depending on ambient temperature; manual will specify)
Oil Capacity Liters:
Approx. 1.5 - 2.0 liters (manual will provide exact)
Oil Change:
Every 3,000 - 5,000 km or annually (check manual for exact intervals).
Ignition Timing:
Check and adjust every 5,000 - 10,000 km or as needed.
Valve Clearance:
Check and adjust every 10,000 - 15,000 km (specific procedure in manual).
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (manual will specify)
Coolant Type:
Water with anti-corrosion additive or appropriate antifreeze mix (manual will specify).
Engine Performance:
Carbon build-up in single-cylinder engine, potential for overheating due to air cooling efficiency, worn starter gears.
Electrical:
Fraying wiring harnesses, generator output issues, starter solenoid problems.
Body And Chassis:
Rust on floor pan and lower body sections, door hinge wear and alignment issues.
Carburetor Rebuild:
Regular cleaning and adjustment of the Solex carburetor is common.
Clutch Adjustment:
Periodic clutch adjustment may be required.
