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BMW · Shim-adjusted overhead-cam four-stroke six, dry sump, gearbox shares engine oil, shaft drive

K 1600 GTL

Library entry covers 2011-2025

10 factory 48 guideline

Published source

BMW K 1600 GTL Rider's Manual (US model), 12.2020, Maintenance schedule p.214 and standard scope p.215

Factory owner's handbook. Covers BMW K 1600 GTL rider's manual (US model), order no. 01 40 9 83 1 840, dated 12.2020; earlier generations not compared.

58 items for a 2019 model, grouped by interval the way a factory chart is laid out.

How this bike is built (what the schedule is based on)

Engine cycle: Four-stroke
Engine lubrication: Dry sump (separate oil tank)
Oil filtration: Replaceable cartridge or spin-on filter
Valve gear: Overhead cam, shim adjusted (incl. desmo)
Ignition: Electronic (CDI / transistor / ECU)
Charging: Alternator / stator with rectifier
Battery: Wet cell (flooded lead-acid, needs topping up)
Fuel system: Fuel injection
Cooling: Liquid cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Shares engine oil
Clutch control: Hand lever, hydraulic
Final drive: Shaft
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Disc, hydraulic
Rear brake: Disc, hydraulic
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

2019 BMW K 1600 GTL

On the road: every 200 mi

1 item

Check engine oil level

Pre-ride / on the road

Guideline

Each fuel stop on old machines. Dry sump: check the tank hot, engine idling or just stopped, per your manual.

On the road: every 300 mi

2 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline

On the road: every 500 mi

1 item

Check coolant level

Pre-ride / on the road

Guideline

Every 1,000 mi or 6 months

1 item

Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 3,000 mi or 12 months

7 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Check steering head bearing adjustment

Front end

Guideline
Inspect fork seals, stanchions and fork boots

Front end

Guideline
Check footrests, pegs, rear brake and gear lever pivots

Rear suspension and frame

Guideline
Grease and check center / side stand and springs

Rear suspension and frame

Guideline
Check brake pads and discs

Brakes

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 4,000 mi or 12 months

1 item

Inspect, clean and gap spark plugs

Engine

Guideline

Every 5,000 mi or 12 months

2 items

Change engine oil

Engine

Guideline

Pre-1970 machines: many owners run non-detergent or classic-spec oil with no filter, so short intervals matter. Dry sump: drain the tank and the crankcase/sump, flush the tank and clean the feed and return screens.
Replace oil filter

Engine

Guideline

Every 6,000 mi or 12 months

9 items

Engine oil and filter (change)

Engine

Factory

Factory: Maintenance schedule (p.214): every 10,000 km (6,000 mi), and in the 12-month column with note a: annually or every 6,000 miles (10,000 km), whichever comes first. Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.
Inspect coolant hoses and clamps

Engine

Guideline
Clean / inspect air filter

Fuel and air

Guideline

Mesh or oiled foam: clean and re-oil. Paper: blow out or replace. Some very early machines have no filter at all.
Check charging voltage and regulator / cut-out

Ignition and electrics

Guideline
Check final drive for leaks and bearing play

Final drive

Guideline
Check swingarm bushes for play

Rear suspension and frame

Guideline
Inspect rear shocks for leaks and damping

Rear suspension and frame

Guideline
Lubricate control cables and lever pivots

Controls and cables

Guideline
Lubricate speedometer / tachometer cables, check drive

Controls and cables

Guideline

A dry speedo cable whips the needle and eventually kills the instrument.

Every 10,000 mi or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 12,000 mi or 2 years

6 items

Rear bevel gear oil (change)

Engine

Factory

Factory: Maintenance schedule (p.214): every 20,000 km (12,000 mi), and in the 24-month column with note b: annually or every 12,000 miles (20,000 km), whichever comes first. Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.
Replace air filter element

Fuel and air

Guideline
Synchronize throttle bodies

Fuel and air

Guideline
Change final drive (rear drive) oil

Final drive

Guideline
Clean and grease rear suspension linkage

Rear suspension and frame

Guideline
Grease swingarm pivot

Rear suspension and frame

Guideline

Every 12,000 mi

1 item

Air cleaner insert (replace)

Fuel and air

Factory

Factory: Maintenance schedule (p.214): every 20,000 km (12,000 mi). Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.

Every 15,000 mi or 3 years

1 item

Change fork oil

Front end

Guideline

Some early telescopic forks are grease filled or use very small oil quantities. Check your manual.

Every 15,000 mi or 4 years

1 item

Check valve clearances (shim adjusted)

Engine

Guideline

Every 16,000 mi or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 18,000 mi

2 items

Spark plugs (replace all)

Engine

Factory

Factory: Maintenance schedule (p.214): every 30,000 km (18,000 mi). Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.
Valve clearance (check)

Engine

Factory

Factory: Maintenance schedule (p.214): every 30,000 km (18,000 mi). Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.

Every 20,000 mi or 4 years

3 items

Lubricate drive shaft splines / check U-joint

Final drive

Guideline
Repack / replace steering head bearings

Front end

Guideline

Many old machines use loose balls in cups and cones. Taper roller conversions are common.
Repack / replace wheel bearings

Wheels and tires

Guideline

Cup-and-cone and taper roller hubs need periodic repacking and adjustment.

Every 24,000 mi or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

Every 25,000 mi or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 30,000 mi or 6 years

1 item

Rebuild forks: seals, bushes, springs

Front end

Guideline

Every 6 months

1 item

Clean battery terminals, check charge and strap

Ignition and electrics

Guideline

Every 12 months

2 items

BMW Service standard scope

Rear suspension and frame

Factory

Factory: Maintenance schedule (p.214): every 12 months; see the standard scope list below. Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.
BMW Service standard scope (checks)

Rear suspension and frame

Factory

Factory: Maintenance confirmations (p.215), BMW Service standard scope: vehicle test with the BMW Motorrad diagnostic system; drain the oil condensate hose; visually inspect brake lines, hoses and connections; check front and rear brake pads and discs for wear; check front and rear brake fluid levels; visually inspect the clutch system; check coolant level; check tire pressure and tread depth; check side stand and center stand for ease of movement; check lighting and signals; check engine start suppression; final inspection and road safety check; set the service date and remaining distance; check battery charge; confirm the service in the vehicle literature. The actual work for your vehicle may differ.

Every 2 years

7 items

Replace coolant

Engine

Guideline
Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Replace hydraulic clutch fluid

Primary and gearbox

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Rear swingarm bearing (check for deflection)

Rear suspension and frame

Factory

Factory: Maintenance schedule (p.214): every 24 months. Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.
Brake fluid, entire system (change)

Brakes

Factory

Factory: Maintenance schedule (p.214): note c: for the first time after one year, then every two years. Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.
Replace brake fluid

Brakes

Guideline

Every 4 years

3 items

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.
Inspect brake hoses; replace old rubber

Brakes

Guideline
Rebuild calipers and master cylinders (seals)

Brakes

Guideline

Every 6 years

1 item

Replace tires on age (regardless of tread)

Wheels and tires

Guideline

No interval set

1 item

BMW running-in check (including oil change)

Engine

Factory

Factory: Maintenance schedule (p.214): at 500 to 1,200 km (300 to 750 mi). Columns: 500 to 1,200 km (300 to 750 mi), then 10,000 km (6,000 mi) steps to 100,000 km (60,000 mi), 12 months and 24 months.

Guideline lines: Intervals here are general guidelines for the machine's era and layout, compiled for this app. They are not factory manual figures. Check your workshop manual, and edit any interval in the bike's Schedule tab.