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Manual Coverage
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Systems Covered
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Engine Systems:
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Engine mechanical (cylinder head, crankcase, pistons, connecting rods, crankshaft, valve train), fuel system (injection, fuel pump, injectors, throttle body), ignition system, exhaust system, lubrication system (oil pump, oil filter, oil cooler), cooling system (radiator, fan, coolant pump).
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Drivetrain Systems:
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Transmission (gearbox operation, gear selection, clutch operation, lubrication), final drive (chain drive maintenance, sprocket replacement, lubrication).
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Chassis Systems:
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Front suspension (forks, steering head bearings, triple clamps), rear suspension (shock absorber, swingarm, linkage), wheels and tires, braking system (hydraulic system, brake calipers, master cylinders, brake discs, brake pads, ABS system if equipped), steering system (handlebars, cables, steering lock).
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Electrical Systems:
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Battery, charging system (alternator, voltage regulator), starting system (starter motor), lighting system (headlight, taillight, turn signals, indicators), instrumentation (dashboard, warning lights), wiring diagrams, fuses and relays, electronic control units (ECU), sensors.
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Procedures Included
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Maintenance Procedures:
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Scheduled maintenance, oil changes, filter replacements (oil, air), spark plug replacement, chain adjustment and lubrication, brake fluid replacement, coolant replacement, battery maintenance, valve clearance checks and adjustment.
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Repair Procedures:
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Engine disassembly and reassembly, transmission rebuild, suspension component replacement, brake system repair, electrical component diagnosis and replacement, body panel removal and installation, exhaust system repair.
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Troubleshooting Guides:
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Diagnostic flowcharts for common problems, symptom-based troubleshooting, fault code interpretation (if applicable).
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Technical Depth
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Diagnostic Capabilities:
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Advanced diagnostics, electrical system troubleshooting with wiring diagrams, mechanical component testing.
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Rebuild Capabilities:
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Complete engine rebuild procedures, transmission overhaul, carburetor (if applicable) or fuel injection system rebuilding.
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Data Availability:
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Torque specifications, alignment procedures, tolerances, fluid capacities, electrical resistance values.
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Engine Specifications
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Primary Engine
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Engine Type:
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Single-cylinder, four-stroke
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Displacement:
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652 cc (approximate)
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Bore X Stroke:
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100 mm x 83 mm (typical for this engine configuration)
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Compression Ratio:
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10.0:1 (typical)
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Performance
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Horsepower:
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Approx. 50 HP (37 kW) @ 6500 RPM
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Torque:
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Approx. 62 Nm (46 lb-ft) @ 5000 RPM
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Fuel System
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Fuel Delivery:
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Electronic Fuel Injection (EFI), typically Bosch Motronic or similar.
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Fuel Type:
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Unleaded gasoline, minimum 91 octane (RON+MON)/95 RON.
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Ignition System
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Ignition Type:
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Digital electronic ignition
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Lubrication System
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Oil Type:
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SAE 15W-50, API SG or higher, JASO MA certified motorcycle oil.
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Oil Capacity With Filter Change:
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Approx. 2.3 Liters (2.4 US Quarts)
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Cooling System
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Cooling Type:
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Liquid-cooled
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Coolant Type:
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Ethylene glycol-based coolant with corrosion inhibitors (e.g., BMW approved).
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Valve Train
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Valve Actuation:
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Single Overhead Camshaft (SOHC), 4 valves per cylinder.
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Dimensions
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Exterior
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Length:
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Approx. 2170 mm (85.4 in) for GS, 2215 mm (87.2 in) for Dakar
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Width:
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Approx. 920 mm (36.2 in) (at handlebars)
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Height:
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Approx. 1350 mm (53.1 in) (seat height variable, approx. 810-830 mm for GS, 870 mm for Dakar)
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Wheelbase:
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Approx. 1465 mm (57.7 in)
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Weights
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Dry Weight:
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Approx. 191 kg (421 lbs) for GS, 195 kg (430 lbs) for Dakar
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Gross Vehicle Weight Rating Gvwr:
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Not typically specified in this manner for motorcycles, but payload capacity is relevant.
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Fuel Tank Capacity:
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17 Liters (4.5 US Gallons) for GS, 23 Liters (6.1 US Gallons) for Dakar
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 10,000 km (6,000 miles) or annually, whichever comes first.
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Air Filter Replacement Interval:
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Every 20,000 km (12,000 miles), or more frequently in dusty conditions.
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Spark Plug Replacement Interval:
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Every 20,000 km (12,000 miles).
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Valve Clearance Check Interval:
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Every 20,000 km (12,000 miles).
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Chain Lubrication Frequency:
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Every 1,000 km (600 miles) and after washing or riding in rain.
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Fluid Specifications
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Brake Fluid Type:
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DOT 4.
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Coolant Type:
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BMW approved ethylene glycol-based coolant.
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Known Issues
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Common Wear Items:
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Clutch plates, wheel bearings, steering head bearings, fork seals, rear shock absorber.
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Electrical Gremlins:
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While generally robust, some owners report minor electrical connection issues or failing regulators over time, typical for older vehicles.
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Fuel Pump Reliability:
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Early models with certain fuel pump designs experienced occasional failures, addressed in later revisions or by aftermarket replacements.
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Vehicle History
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Brand Heritage
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Brand Focus:
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BMW Motorrad is renowned for its engineering prowess, durability, and adventure-oriented motorcycles.
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Model Evolution
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F650Gs Introduction:
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Introduced in 1993 as the F650, it was BMW's first single-cylinder motorcycle in decades, targeting a broader market. Re-badged as F650GS in 1999 with fuel injection and other updates.
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Gs Dakar Variant:
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The GS Dakar variant, introduced in 2000, featured increased suspension travel, larger front wheel (21-inch), taller windscreen, and a larger fuel tank to enhance off-road capability and long-distance touring.
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Production
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Production Period:
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F650GS and GS Dakar models were produced from 1993 (as F650) through to approximately 2007, before being succeeded by the F650GS (twin-cylinder).
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Manufacturing Location:
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Originally manufactured by Aprilia under contract for BMW in Italy, later production may have shifted.
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