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BMW · Modern air-cooled single (2000-)

C 400

Library entry covers 2018-2025

18 factory 36 guideline

Published source

BMW Motorrad Rider's Manual (US) C 400 X, Maintenance schedule p.216

Factory owner's handbook. Covers C 400 X US rider's manual, 09-2020 1st edition (miles and km).

Open the source

54 items for a 2025 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, screw/locknut adjusters
Ignition: Electronic (CDI / transistor / ECU)
Charging: Alternator / stator with rectifier
Battery: Wet cell (flooded lead-acid, needs topping up)
Fuel system: Fuel injection
Cooling: Air / oil cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Shares engine oil
Clutch control: Automatic or semi-automatic
Final drive: Leather or rubber V-belt (veteran)
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

2025 BMW C 400

On the road: every 100 mi

1 item

Check drive belt tension and belt fastener

Pre-ride / on the road

Guideline

Leather and early rubber belts stretch and slip when wet. Carry a spare fastener and a belt punch.

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

Every 500 mi

1 item

Dress / clean V-belt and pulley rims

Final drive

Guideline

Every 1,000 mi or 6 months

1 item

Adjust rear drum brake and rod / cable linkage

Brakes

Guideline

Every 3,000 mi or 12 months

6 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Adjust automatic / semi-automatic clutch

Primary and gearbox

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 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 6,000 mi or 12 months

15 items

Change engine oil

Engine

Factory

Manual: Engine oil change with filter. Factory: Every 6,000 mi (10,000 km) or annually; running-in check includes oil change.
Inspect coolant hoses and clamps

Engine

Factory

Manual: BMW Service standard scope: Checking coolant level. Factory: Standard scope of BMW Service, every 10,000 km (6,000 mi) or annually.
Replace oil filter

Engine

Factory

Manual: Engine oil change with filter. Factory: Filter replaced with each oil change.
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
Clean battery terminals, check charge and strap

Ignition and electrics

Factory

Manual: BMW Service standard scope: Checking battery charge state. Factory: Standard scope of BMW Service, every 10,000 km (6,000 mi) or annually.
BMW Service standard scope: Checking steering-head bearing

Front end

Factory

Factory: Standard scope of BMW Service, every 10,000 km (6,000 mi) or annually.
Check steering head bearing adjustment

Front end

Factory

Manual: Checking steering-head bearing. Factory: Every 10,000 km (6,000 mi); also in annual standard service.
Check swingarm bushes for play

Rear suspension and frame

Guideline
Inspect rear shocks for leaks and damping

Rear suspension and frame

Guideline
Check brake pads and discs

Brakes

Factory

Manual: BMW Service standard scope: Checking brake pads and brake discs for wear. Factory: Standard scope of BMW Service, every 10,000 km (6,000 mi) or annually.
Inspect brake hoses; replace old rubber

Brakes

Factory

Manual: BMW Service standard scope: Visual inspection of brake lines, hoses and connections. Factory: Standard scope of BMW Service, every 10,000 km (6,000 mi) or annually.
Inspect tire tread, sidewalls and date codes

Wheels and tires

Factory

Manual: BMW Service standard scope: Check tire pressures and tread depth. Factory: Standard scope of BMW Service, every 10,000 km (6,000 mi) or annually.
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 6,000 mi

2 items

Clean/check filter for CVT

Engine

Factory

Factory: Every 10,000 km (6,000 mi).
Replace air filter element

Fuel and air

Factory

Manual: Replace the air filter insert. Factory: Every 10,000 km (6,000 mi).

Every 8,000 mi or 2 years

1 item

Check and adjust valve clearances

Engine

Guideline

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

5 items

Check valve clearances (shim adjusted)

Engine

Factory

Manual: Check valve clearance. Factory: Every 20,000 km (12,000 mi).
Replace fixture for rubber mount

Engine

Factory

Factory: Every 20,000 km (12,000 mi).
Replace spark plugs

Engine

Factory

Manual: Replace all spark plugs. Factory: Every 20,000 km (12,000 mi).
Replace drive belt (wear or damage based)

Final drive

Factory

Manual: Replace the CVT belt and roll weights with slide shoes. Factory: Every 20,000 km (12,000 mi).
Change fork oil

Front end

Factory

Manual: Oil change in the telescopic forks. Factory: Every 20,000 km (12,000 mi).

Every 15,000 mi

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

Every 20,000 mi or 4 years

2 items

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 24,000 mi

1 item

Inspect clutch plates and springs

Primary and gearbox

Factory

Manual: Check clutch (clutch removed). Factory: Every 40,000 km (24,000 mi).

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 2 years

3 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Replace brake fluid

Brakes

Factory

Manual: Change brake fluid, entire system. Factory: For the first time after one year, then every 2 years.

Every 4 years

2 items

Replace fuel lines

Fuel and air

Guideline

Old rubber and modern ethanol fuel do not mix well.
Rebuild calipers and master cylinders (seals)

Brakes

Guideline

Every 6 years

1 item

Replace tires on age (regardless of tread)

Wheels and tires

Guideline

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.