Target Audience:
BMW motorcycle owners seeking to perform maintenance and repairs themselves, independent repair shops, and enthusiasts.
Value Proposition:
Provides factory-level technical information, saving time and money on repairs compared to dealer labor rates.
Authenticity:
Same type of manual used by dealership technicians.
Comprehensiveness:
Includes all necessary instructions and diagrams for effective repair.
Convenience:
Instant download allows immediate access to repair information.
Engine Top End:
Detailed procedures for cylinder head, valves, piston, rings, camshaft, and timing.
Fuel System:
Carburetor/injector servicing, fuel pump, fuel filter, and fuel tank procedures.
Cooling System:
Radiator, fan, coolant hoses, and thermostat maintenance and replacement.
Engine Lubrication System:
Oil pump, oil filter, oil pan, and lubrication circuit servicing.
Clutch:
Clutch assembly, pressure plate, friction plates, and clutch cable/hydraulic system.
Engine Removal Installation:
Comprehensive steps for engine removal and reinstallation from the chassis.
Crankshaft Transmission:
Gearbox servicing, gear selection, crankshaft, and bearing inspection.
Wheels Tires:
Wheel bearing inspection, tire mounting/balancing, and rim specifications.
Final Drive:
Shaft drive system servicing, universal joints, and final drive unit maintenance.
Brakes:
Brake pad/shoe replacement, caliper servicing, brake fluid replacement, and brake line inspection.
Suspension:
Front fork servicing (seals, oil), rear shock absorber inspection and replacement.
Steering:
Handlebar, steering head bearings, and steering linkage inspection and adjustment.
Frame:
Chassis inspection, frame integrity checks, and component mounting.
Electrical System:
Wiring diagrams, battery servicing, charging system (alternator, regulator), ignition system, and lighting.
Appendix:
Includes torque specifications, fastener information, and troubleshooting guides.
General Information:
Vehicle identification, general specifications, safety precautions, and special tools.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, chain lubrication (where applicable), and fluid level checks.
Diagnostic Procedures:
Troubleshooting common problems, fault finding for electrical and mechanical systems.
Component Rebuild:
Detailed instructions for disassembling, inspecting, repairing, and reassembling key components like engines, transmissions, and suspension.
Torque Specifications:
Precise torque values for all critical fasteners to ensure proper assembly and safety.
Wiring Diagrams:
Clear and detailed electrical schematics for troubleshooting and repair.
Depth Level:
Comprehensive, covering routine maintenance to full engine and chassis overhauls. Used by dealership technicians.
Bmw R80Gs Engine Type:
Air-cooled, four-stroke, boxer-twin engine
Bmw R80Gs Displacement:
Approximately 797.5 cc
Bmw R80Gs Bore X Stroke:
80.9 mm x 78.2 mm (typical for R80 models)
Bmw R80Gs Compression Ratio:
Typically around 8.2:1 or 8.5:1, but specific value should be confirmed from manual
Bmw R80Gs Power Output:
Approximately 50 hp @ 6,500 rpm (figures vary by specific R80GS model/tuning)
Bmw R80Gs Torque:
Approximately 56 Nm @ 4,500 rpm (figures vary by specific R80GS model/tuning)
Bmw R80Gs Fuel System:
Dual Bing 32mm carburetors (typical for R80 models)
Bmw R1200C Engine Type:
Air/oil-cooled, four-stroke, boxer-twin engine
Bmw R1200C Displacement:
1170 cc
Bmw R1200C Bore X Stroke:
101 mm x 73 mm
Bmw R1200C Compression Ratio:
11.0:1
Bmw R1200C Power Output:
61 kW (82 hp) @ 6,750 rpm
Bmw R1200C Torque:
105 Nm (77 lb-ft) @ 5,750 rpm
Bmw R1200C Fuel System:
Electronic fuel injection (BMS-K)
Fuel Type:
Unleaded gasoline, minimum 95 RON
R80Gs Technology:
Primarily mechanical systems with basic analog instrumentation. Focus is on reliability and rider engagement.
R1200C Technology:
Features a more integrated electrical system with ABS (optional on some models), digital clock, and generally more refined rider interfaces than earlier models.
R80Gs Assistance:
No electronic driver assistance systems. Emphasis on rider skill and mechanical feedback.
R1200C Assistance:
Optional Anti-lock Braking System (ABS II) available on certain R1200C models, enhancing braking safety.
Connectivity Features:
None. These are pre-digital connectivity eras for motorcycles.
Oil Change Interval:
Typically every 10,000 km or annually (refer to manual for exact interval and oil type)
Valve Check Interval:
Typically every 20,000 km or as specified in the manual (crucial for boxer engines).
Brake Fluid Change:
Every 2 years or as per manual recommendations, especially if DOT 3/4 fluid is used.
Engine Oil R80Gs:
BMW recommends specific viscosity grades (e.g., 20W-50 or 15W-50) for air-cooled boxers. Refer to manual for precise spec and API rating.
Engine Oil R1200C:
BMW Motorrad recommends SAE 15W-50 synthetic engine oil for optimal performance. Check manual for exact API classification and capacity.
Transmission Oil:
Gearbox oil specifications (e.g., SAE 75W-90 or 80W-90 API GL-5) should be strictly followed as per the manual.
Final Drive Oil:
Specific gear oil for the final drive, often SAE 75W-90 or 80W-90. Capacity and API rating critical. Refer to manual.
Brake Fluid:
DOT 4 brake fluid recommended for most BMWs of this era. Ensure compatibility and change as per schedule.
Common R80Gs Issues:
Seals (crankshaft, transmission output), carburetor synchronization, wear in the driveshaft U-joint, and electrical connector corrosion are commonly cited.
Common R1200C Issues:
Telelever seal leaks, driveshaft spline lubrication, and intermittent electrical issues can occur. Refer to manual for specific troubleshooting.
Heritage:
BMW Motorrad has a long history of producing robust and innovative motorcycles, particularly known for their boxer engines and durability.
R80Gs Evolution:
The R80GS is part of the legendary GS (Geländestraße/Sport) dual-sport lineage, derived from the R80G/S and a precursor to later larger-displacement GS models. Known for its off-road capability and touring comfort.
R1200C Evolution:
The R1200C represents BMW's foray into the cruiser segment, featuring a distinctive styling and the characteristic boxer engine, offering a relaxed riding experience.
R80Gs Production Years:
1987-1995 (approximate, specific model R80GS variant may vary)
R1200C Production Years:
1997-2004
