Comprehensive Maintenance Schedule for the BMW F 850 GS Motorcycle
The BMW F 850 GS, a mid-size adventure motorcycle, was first introduced in 2018 as the successor to the F 800 GS. Also known as the F850GS in some markets, this bike offers exceptional on-road and off-road performance in a more accessible package compared to the larger R 1250 GS.
Why Riders Love the BMW F 850 GS
- Versatile performance suitable for both on-road touring and off-road adventures
- Powerful and smooth 853cc parallel-twin engine
- Comfortable ergonomics for long-distance riding
- Advanced electronics including ride modes, traction control, and cornering ABS
- Adjustable suspension for tackling varied terrain
- Large 6.1-gallon fuel tank for extended range
- Wide range of available accessories for customization
Technical Specifications
| Specification | 2018-2020 | 2021+ |
|---|---|---|
| Engine | 853cc liquid-cooled 4-stroke parallel-twin | 853cc liquid-cooled 4-stroke parallel-twin |
| Power | 90 hp @ 8,000 rpm | 90 hp @ 8,250 rpm |
| Torque | 63 lb-ft @ 6,250 rpm | 63 lb-ft @ 6,250 rpm |
| Transmission | 6-speed | 6-speed |
| Front suspension | 43mm USD fork, 8.0 in travel | 43mm USD fork, 8.0 in travel |
| Rear suspension | WAD strut, 8.6 in travel | WAD strut, 8.6 in travel |
| Seat height | 32.1 – 34.4 in | 32.1 – 34.4 in |
| Fuel capacity | 4.0 gal | 6.1 gal |
| Wet weight | 504 lbs | 538 lbs |
Key changes for 2021+ models:
- Updated front fairing and windscreen
- Larger 6.1-gallon fuel tank
- Increased wet weight due to larger fuel tank
- Minor engine tuning for smoother power delivery
Fluid Specifications
| Fluid | Type | Capacity | Change Interval |
|---|---|---|---|
| Engine oil | 15W-50 synthetic | 3.0 L | Annual/6,000 mi |
| Coolant | BMW coolant | 1.7 L | 4 years |
| Brake fluid | DOT 4 | 0.5 L | 2 years |
| Fork oil | SAE 10W | 500 mL | 30,000 mi |
| Final drive oil | 75W-90 | 180 mL | 24,000 mi |
Parts Requiring Regular Maintenance
Every Ride:
- Check tire pressure and tread depth
- Check engine oil level
- Inspect brake pads and discs
Monthly:
- Lubricate and adjust chain
- Check all lights and controls
- Inspect brake lines and fittings
Annually:
- Change engine oil and filter
- Check valve clearance (every 2 years)
- Replace air filter
- Check and adjust throttle cables
- Flush and replace brake fluid (every 2 years)
- Inspect steering head bearings
- Lubricate side stand and center stand pivots
Major Service Intervals:
- 6,000 miles:
- Change engine oil and filter
- Check valve clearance
- Replace spark plugs
- 12,000 miles:
- All 6,000-mile items
- Replace air filter
- Check and adjust throttle cables
- Flush and replace brake fluid
- 18,000 miles:
- All 6,000-mile items
- 24,000 miles:
- All 12,000-mile items
- Change final drive oil
- Replace fuel filter
Maintenance Schedule
| Task | 600 mi | 6K mi | 12K mi | 18K mi | 24K mi | Annual |
|---|---|---|---|---|---|---|
| Change engine oil & filter | X | X | X | |||
| Check valve clearance | X | X | ||||
| Replace air filter | X | X | ||||
| Replace spark plugs | X | X | ||||
| Check throttle cables | X | X | ||||
| Flush brake fluid | X | 2 yr | ||||
| Inspect brake pads & discs | X | |||||
| Lubricate chain | X | |||||
| Check tire pressure & tread | X | |||||
| Inspect lights & controls | X | |||||
| Lubricate stands | X | X |
Maintenance FAQs
- What is the recommended engine oil for the F 850 GS? BMW recommends 15W-50 synthetic oil meeting API SL or JASO MA2 specs. The bike requires 3.0L of oil with filter change.
- How often should I change the air filter? The air filter should be replaced every 12,000 miles or annually, whichever comes first. More frequent changes may be needed in dusty conditions.
- What is the valve clearance check interval? Valve clearance should be checked every 12,000 miles. Adjustment shims are used to set clearance if needed.
- Can I do my own maintenance on the F 850 GS? Many tasks like oil changes, chain maintenance, and fluid checks can be done by owners with basic mechanical skills. More advanced tasks may require special tools and expertise.
- How much does typical maintenance cost for this bike? Annual minor services with an oil change, fluids top-off, and inspections typically cost $200-300. Major services at 12,000-mile intervals with valve checks are $800-1000+.
- What are some common issues to watch out for? Some 2018-2019 models had reports of coolant leaks from the water pump. A stalling issue on some early models was resolved with an ECU update.
- How can I make my chain and sprockets last longer? Consistent chain lubrication and tension adjustment will maximize the life of the chain and sprockets. Aim to lubricate the chain every 300-600 miles.
- When should I replace my tires? Check tire tread depth regularly and replace tires when tread reaches the wear bars, about 2/32″ of remaining tread. Inspect for damage or uneven wear as well.
- Is the F 850 GS shaft drive or chain drive? The F 850 GS uses a conventional chain final drive which requires more frequent maintenance than a shaft.
- How long do brake pads typically last? Brake pad life varies widely based on riding style and conditions, but average life is about 12,000-18,000 miles for the front and slightly longer for the rear.
Tips for Prolonging the Life of Your BMW F 850 GS
- Perform regular maintenance on schedule to prevent issues
- Avoid redlining and lugging the engine, especially when cold
- Warm up the bike gently before riding hard
- Keep the chain clean and properly lubricated
- Store the bike indoors or under a cover
- Use high-quality fluids and parts for maintenance
- Address any leaks, noises, or problems promptly
Troubleshooting Guide
| Issue | Possible Causes | Suggested Solutions |
|---|---|---|
| Engine won’t start | Dead battery, faulty starter, no fuel | Charge/replace battery, check starter, inspect fuel delivery |
| Rough running | Fouled spark plugs, clogged air filter, low compression | Replace plugs, clean/replace air filter, perform compression test |
| Clutch slipping | Worn clutch, incorrect adjustment | Replace clutch plates, check cable adjustment |
| Leaking fork seals | Worn seals, scratched fork tubes | Replace seals, polish or replace fork tubes |
| Unstable handling | Unbalanced tires, loose steering head, bent wheels | Balance tires, adjust steering head, inspect wheels |
Resources
Recommended Tools for Home Maintenance:
- Metric socket set
- Torque wrench
- Oil filter wrench
- Chain breaker and riveting tool
- Tire pressure gauge
- Trickle battery charger
Sources of this Blog Post
Here are the sources referenced in this comprehensive maintenance schedule for the BMW F 850 GS motorcycle:
Primary References
- LoneRider Blog – History of BMW GS Models: Provides a detailed history of BMW GS models from the 1980 R80 G/S to the current models.
- Wikipedia – BMW F series parallel-twin: Offers an overview of BMW’s F series parallel-twin motorcycles, including the F 850 GS.
- BMW Motorrad Australia – F 850 GS Adventure: Official BMW Motorrad page for the F 850 GS Adventure, providing detailed specifications and features.
- BMW Motorrad Australia – F 850 GS: Official BMW Motorrad page for the F 850 GS, providing detailed specifications and features.
Technical and Maintenance Information
- ADVrider – BMW F 850 GS Full Ride Review: Provides an in-depth review of the BMW F 850 GS, focusing on its performance and capabilities both on and off-road.
- BMW Motorrad Australia – F 850 GS Technical Data: Official technical data and specifications for the BMW F 850 GS.
- AutoEvolution – BMW F Series: Provides information on the BMW F series motorcycles, including the F 850 GS.
- Motorcycle Parts Hornig – BMW F 750 GS/F 850 GS Engine Oil: Lists recommended engine oil types and specifications for the BMW F 750 GS and F 850 GS.
Additional References
- Maintenance Schedule – BMW F 850 GS: Comprehensive maintenance schedule for the BMW F 850 GS.
- 850 GS Forum – Maintenance Discussions: Forum discussions on maintenance tips and experiences for the BMW F 850 GS.
- YouTube – BMW F 850 GS Review: Video review discussing the performance and features of the BMW F 850 GS.
- Adventure Bike Rider – BMW F 850 GS Review: Provides a comprehensive review of the BMW F 850 GS, focusing on its suitability for adventure riding.
These sources were used to compile accurate and detailed information for the maintenance schedule and technical specifications of the BMW F 850 GS.