BMW K75 / K100 / K1 / K1100 — Example photo: Wusel007, CC BY-SA 3.0, Wikimedia Commons

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BMW · BMW K-bike (K75 / K100 / K1100 1983-1999)

K75 / K100 / K1 / K1100

Library entry covers 1983-1999

40 factory 30 guideline

Published source

BMW Motorrad Maintenance schedule K75/K1/K100 (form UX-VS-2, 07.2001)

Factory factory bulletin. Covers K75/K1/K100/K100RT/LT to 1993, K100RS 2V/4V to 1993.

70 items for a 1985 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: Wet sump (oil in crankcase)
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: Separate gearbox oil
Clutch control: Hand lever, cable
Final drive: Shaft
Front suspension: Telescopic fork
Rear suspension: Swingarm, single shock / cantilever
Front brake: Disc, hydraulic
Rear brake: Drum (or band / belt rim)
Wheels: Cast / alloy, tubeless
Sidecar: No sidecar

Maintenance schedule

1985 BMW K75 / K100 / K1 / K1100

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

2 items

Adjust rear drum brake and rod / cable linkage

Brakes

Guideline
Inspect tire tread, sidewalls and date codes

Wheels and tires

Guideline

Every 1,800 mi or 3 months

1 item

Change oil, renew oil filter element: if motorcycle is used only for short journeys or at outside temperatures below 0°C, every 3 months, and at least every 3,000 km (1,800 miles)

Engine

Factory

Factory: As printed: every 3 months, and at least every 3,000 km (1,800 miles) (short journeys or below 0°C)

Every 3,000 mi or 12 months

4 items

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.
Inspect fork seals, stanchions and fork boots

Front end

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

Rear suspension and frame

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 4,000 mi or 12 months

2 items

Inspect, clean and gap spark plugs

Engine

Guideline
Lubricate brake cam spindles, check linings and drums

Brakes

Guideline

Every 4,500 mi or 6 months

2 items

Change engine oil

Engine

Factory

Manual: Change oil, renew oil filter element. Factory: Every 7,500 km service; short trips/below 0C: 3 months, 3,000 km. Form p.1
Replace oil filter

Engine

Factory

Manual: Renew oil filter element. Factory: With every oil change. Form p.1

Every 4,500 mi or 12 months

1 item

Final inspection with safety/operating check: condition of tires and wheels, tire pressures; clutch and gear shift; handbrake and footbrake, ABS; steering, instruments; idle speed and CO content of exhaust, correct or adjust if necessary

Front end

Factory

Factory: As printed: marked in all four columns: 1,000 km/600 miles, every 7,500 km/4,500 miles, every 15,000 km/9,000 miles, Annual Service

Every 4,500 mi

8 items

[ABS] Check sensor gap for ABS at front and rear, adjust if necessary

Engine

Factory

Factory: As printed: marked at BMW Inspection at 1,000 km/600 miles, BMW Maintenance Service every 7,500 km/4,500 miles and BMW Inspection every 15,000 km/9,000 miles
[catalytic converter] Read out MOTRONIC fault memory

Engine

Factory

Factory: As printed: marked at BMW Maintenance Service every 7,500 km/4,500 miles and BMW Inspection every 15,000 km/9,000 miles
Inspect wiring, bullet connectors and ground points

Ignition and electrics

Factory

Manual: Final inspection: lights, signals, warning lights. Factory: Every service column. Form p.1
Check operation of electric side stand switch (angle)

Rear suspension and frame

Factory

Factory: As printed: marked at BMW Inspection at 1,000 km/600 miles, BMW Maintenance Service every 7,500 km/4,500 miles and BMW Inspection every 15,000 km/9,000 miles
Grease and check center / side stand and springs

Rear suspension and frame

Factory

Manual: Grease side/center stand pivots. Factory: 7,500 and 15,000 km columns. Form p.1
Check brake pads and discs for wear: only motorcycles with ABS every 7500 km / 4,500 miles

Brakes

Factory

Factory: As printed: only motorcycles with ABS every 7500 km / 4,500 miles (bold box in 7,500 km column)
[ABS] Check sensor/pulse wheel for ABS at front and rear for contamination, clean if necessary

Wheels and tires

Factory

Factory: As printed: marked at BMW Maintenance Service every 7,500 km/4,500 miles and BMW Inspection every 15,000 km/9,000 miles
Lubricate control cables and lever pivots

Controls and cables

Factory

Manual: Grease clutch cable nipples. Factory: 7,500 and 15,000 km columns. Form p.1

Every 6,000 mi or 12 months

5 items

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 speedometer / tachometer cables, check drive

Controls and cables

Guideline

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

Every 6,000 mi

1 item

Renew intake air cleaner element: in very dirty or dusty conditions, renew every 10,000 km (6,000 miles), or even more frequently if necessary

Fuel and air

Factory

Factory: As printed: every 10,000 km (6,000 miles) in very dirty or dusty conditions

Every 9,000 mi or 12 months

6 items

Apply silicone spray to guide rods of adjustable windshield (only K 100 LT, K 75 RT)

Engine

Factory

Factory: As printed: marked at BMW Inspection every 15,000 km/9,000 miles and BMW Annual Service
Clean battery terminals, check charge and strap

Ignition and electrics

Factory

Manual: Clean and grease battery posts. Factory: 15,000 km and annual. Form p.1
Change gearbox oil

Primary and gearbox

Factory

Manual: Change oil in gearbox. Factory: 15,000 km inspection; at least once a year. Form p.1
Change final drive (rear drive) oil

Final drive

Factory

Manual: Change oil in final drive. Factory: 15,000 km inspection; at least once a year. Form p.1
Change fork oil

Front end

Factory

Manual: Change oil in telescopic fork. Factory: 15,000 km inspection; at least once a year. Form p.1
Clean inductive sensor at rear wheel at least once a year

Wheels and tires

Factory

Factory: As printed: marked at 1,000 km/600 miles, every 15,000 km/9,000 miles and BMW Annual Service (bold box); at least once a year

Every 9,000 mi

13 items

Check coolant level and concentration, and top up if necessary

Engine

Factory

Factory: As printed: marked at BMW Inspection at 1,000 km/600 miles and BMW Inspection every 15,000 km/9,000 miles
Check engine mounting bolts and plates

Engine

Factory

Manual: Take up slack: power unit to frame, strut mounts, studs. Factory: Form p.1
Check valve clearances (shim adjusted)

Engine

Factory

Manual: Check valve clearances. Factory: 15,000 km box marked not standard; K75 also at 1,000 km. Form p.1
Inspect coolant hoses and clamps

Engine

Factory

Manual: Check hose clips on fuel and cooling system. Factory: Also coolant level. Form p.1
Replace spark plugs

Engine

Factory

Manual: Renew spark plugs. Factory: Form p.1
Check throttle cable(s) free play and return

Fuel and air

Factory

Manual: Check throttle and choke cable free travel. Factory: Form p.1
Replace air filter element

Fuel and air

Factory

Manual: Renew intake air cleaner element. Factory: Marked not standard; dusty conditions every 10,000 km. Form p.1
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Factory

Manual: Check clutch operating clearance. Factory: Form p.1
Check steering head bearing adjustment

Front end

Factory

Manual: Check steering head bearing play. Factory: Form p.1
Check brake fluid level at front and rear, and top up if necessay

Brakes

Factory

Factory: As printed: marked at BMW Inspection at 1,000 km/600 miles and BMW Inspection every 15,000 km/9,000 miles
Check brake pads and discs

Brakes

Factory

Manual: Check brake pads and discs for wear. Factory: ABS models also every 7,500 km. Form p.1
Inspect brake hoses; replace old rubber

Brakes

Factory

Manual: Check brake connections and lines. Factory: Also fluid level. Form p.1
Rebuild calipers and master cylinders (seals)

Brakes

Factory

Manual: Check brake calipers operation/leaks. Factory: Repair/renew if necessary. Form p.1

Every 10,000 mi or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 12,000 mi or 2 years

3 items

Synchronize throttle bodies

Fuel and air

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

Renew fuel filter element: if fuel is of poor quality every 20,000 km (12,000 miles)

Fuel and air

Factory

Factory: As printed: every 20,000 km (12,000 miles) if fuel is of poor quality (normally every 40,000 km (24,000 miles))

Every 15,000 mi

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

Every 18,000 mi

1 item

Repack / replace steering head bearings

Front end

Factory

Manual: Grease twistgrip and steering head bearings. Factory: Severe operating conditions recommendation. Form p.1

Every 20,000 mi or 4 years

2 items

Lubricate drive shaft splines / check U-joint

Final drive

Guideline
Repack / replace wheel bearings

Wheels and tires

Guideline

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

Every 24,000 mi

1 item

Replace fuel filter

Fuel and air

Factory

Manual: Renew fuel filter element. Factory: Poor-quality fuel: every 20,000 km. Form p.1

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 36,000 mi

1 item

Renew lining on chain tensioner rail

Final drive

Factory

Factory: All K models. Form p.1

Every 3 months

1 item

Check battery electrolyte, top up with distilled water

Ignition and electrics

Factory

Manual: Check battery acid level. Factory: At least every 3 months. Form p.1

Every 12 months

2 items

Replace brake fluid

Brakes

Factory

Manual: Renew brake fluid. Factory: At least once a year. Form p.1
Check speedometer / odometer against a known distance

Controls and cables

Guideline

Old speedos drift with tire size and drive wear. Use phone GPS over a measured 10 miles / km.

Every 2 years

2 items

Replace coolant

Engine

Factory

Manual: Renew coolant. Factory: At least every 2 years, annual service column. Form p.1
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline

Every 4 years

1 item

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.

Every 6 years

1 item

Replace tires on age (regardless of tread)

Wheels and tires

Guideline

No interval set

1 item

Check valve clearances: 1000 km / 600 miles K 75 models only

Engine

Factory

Factory: As printed: 1000 km / 600 miles K 75 models only (bold box in 1,000 km column)

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.