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CFMoto · Overhead-cam four-stroke twin, wet sump, gearbox shares engine oil, chain drive

450NK

Library entry covers 2024-2025

37 factory 50 guideline

Published source

CFMoto 450NK Owner's Manual, periodic maintenance chart (ManualsLib viewer pp.95-100)

Factory source. Covers CFMoto 450NK owner's manual (cover: 450NK; US English; no year printed in the pages read).

87 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: Liquid cooled
Primary drive: Gear or chain inside engine, shares engine oil
Gearbox oil: Shares engine oil
Clutch control: Hand lever, cable
Final drive: Chain
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

2025 CFMoto 450NK

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

3 items

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline
Check tire pressures

Pre-ride / on the road

Guideline
Lubricate drive chain

Pre-ride / on the road

Guideline

Lube warm, ideally at the end of the riding day so it soaks in overnight. Sooner after rain.

On the road: every 500 mi

1 item

Check coolant level

Pre-ride / on the road

Guideline

On the road: every 600 mi

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

Every 350 mi

1 item

Chain (lubricate; severe-use item)

Final drive

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 350 mi or 600 km, and right after riding in rain. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

Every 600 mi

1 item

Chain tension (inspect and adjust; severe-use item)

Final drive

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 600 mi or 1,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

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 6 months

4 items

Coarse oil filter (clean)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 6 months, 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Engine oil and oil filter (replace)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 6 months, 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Fuses or circuit breakers (inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 6 months, 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Battery (inspect and recharge)

Ignition and electrics

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 6 months, 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

Every 3,000 mi or 12 months

10 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Clean drive chain thoroughly (remove and soak, re-lube)

Final drive

Guideline

Non O-ring chains on old machines: remove, clean, soak in hot chain grease or lube, refit with the master link clip closed end leading.
Inspect chain and sprockets for wear (measure stretch)

Final drive

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
Cables: damage, bending, routing (inspect)

Controls and cables

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

Every 3,000 mi

7 items

Idle (inspect and adjust)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Spark plug (inspect; replace if necessary)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Suspension system (inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Throttle (inspect and adjust)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Throttle body (clean)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Air filter elements (clean; severe-use item)

Fuel and air

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Clutch (inspect; repair or replace as needed)

Primary and gearbox

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 3,000 mi or 5,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

Every 4,000 mi or 12 months

2 items

Inspect, clean and gap spark plugs

Engine

Guideline
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

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

23 items

Bolts and nuts (inspect tightness)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Coolant level, radiator fan function and cooling hoses (inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Electrical part functions (inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Fault memory (read with diagnostic tool)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Inspect coolant hoses and clamps

Engine

Guideline
Movable parts (lubricate and inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Pipes, ducts, hoses and sleeves: cracks, sealing, routing (inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Wires: damage and routing (inspect)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
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
Chain, rear sprocket and engine sprocket wear (inspect; severe-use item)

Final drive

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Front fork and rear shock for oil leakage (inspect)

Front end

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Steering bearings (inspect)

Front end

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Check swingarm bushes for play

Rear suspension and frame

Guideline
Inspect rear shocks for leaks and damping

Rear suspension and frame

Guideline
Brake fluid level (inspect and top up)

Brakes

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Brake hoses: damage and sealing (inspect)

Brakes

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Brake pads (inspect; severe-use item)

Brakes

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Brake pedal free play (inspect)

Brakes

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Front and rear brake systems, brake discs (inspect)

Brakes

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Tire condition and pressure (inspect)

Wheels and tires

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 12 months, 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
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

Spark plug (replace)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Wheel bearings (inspect)

Wheels and tires

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 6,000 mi or 10,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

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

5 items

Air filter elements (replace; severe-use item)

Fuel and air

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 24 months, 12,000 mi or 20,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
Replace air filter element

Fuel and air

Guideline
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 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 16,000 mi or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 18,000 mi

2 items

Replace chain and sprockets (wear based)

Final drive

Guideline
Frame (inspect)

Rear suspension and frame

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 18,000 mi or 30,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

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 21,000 mi or 2 years

1 item

Coolant (replace)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 24 months, 21,000 mi or 35,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

Every 24,000 mi or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

Every 24,000 mi

1 item

Valve clearance (inspect and adjust)

Engine

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 24,000 mi or 40,000 km. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.

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 2 years

5 items

Replace coolant

Engine

Guideline
Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Brake fluid (replace)

Brakes

Factory

Factory: Periodic maintenance chart (manual pp.95-100, ManualsLib viewer pp.95-100): every 24 months. Intervals as printed by calendar, miles and km, whichever comes first. Items marked with a triangle: shorten the interval by 50% under severe use. Items marked with a square: an authorized dealer should do repairs.
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

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.