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Yamaha · Yamaha four-stroke single (XT/TT/SR 500 1976-)

WR 450

Library entry covers 2004-2025

33 factory 28 guideline

Published source

Yamaha WR450F Owner's Manual 1DX-28199-E0 (English), Periodic maintenance charts pp.6-3 to 6-6

Factory owner's handbook. Covers 2012 (WR450F, EU owner's manual 1DX-28199-E0, printed Oct 2011).

61 items for a 2011 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, 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: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

2011 Yamaha WR 450

On the road: every 300 km

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 500 km

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 800 km

1 item

Check coolant level

Pre-ride / on the road

Guideline

On the road: every 1,000 km

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

On the road: no interval set

1 item

Lubricate drive chain

Pre-ride / on the road

Factory

Manual: Drive chain (check slack, alignment; adjust and lubricate). Factory: Every ride

Every 2,000 km or 3 months

27 items

Breather system (check hose, drain deposits)

Engine

Factory

Factory: Marked initial, 3000km and 5000km columns
Change engine oil

Engine

Factory

Manual: Engine oil (change). Factory: Cols 1000km/1mo, 3000km/3mo, 5000km/6mo; repeat from 7000km at 3000km column
Chassis fasteners (check tightness)

Engine

Factory

Factory: Every column incl. initial and annual check
Inspect coolant hoses and clamps

Engine

Factory

Manual: Cooling system hoses (check cracks or damage, replace). Factory: Every column incl. initial and annual check
Inspect, clean and gap spark plugs

Engine

Factory

Manual: Spark plug (check, clean, regap, replace if necessary). Factory: Marked initial, 3000km and 5000km columns
Lights, signals and switches (check operation, adjust headlight beam)

Engine

Factory

Factory: Initial at 1000 km (600 mi) or 1 month, then marked at 3000 km (1800 mi) or 3 months and 5000 km (3000 mi) or 6 months, repeating from 7000 km (4200 mi) or 9 months; annual check Yamaha WR450F owner's manual 1DX-28199-E0, library.ymcapps.net copy, charts pp.6-3 to 6-6
Muffler and exhaust pipe (check screw clamps)

Engine

Factory

Factory: Marked initial, 3000km and 5000km columns
Replace oil filter

Engine

Factory

Manual: Engine oil filter element (replace). Factory: Every column incl. initial and annual; spacing 2000km(1200mi)/3 months
Check throttle cable(s) free play and return

Fuel and air

Factory

Manual: Throttle grip (check free play, lubricate cable and housing). Factory: Every column incl. initial and annual check
Clean / inspect air filter

Fuel and air

Factory

Manual: Air filter element (clean, replace if damaged). Factory: Marked initial, 3000km and 5000km columns; more often if dusty
Fuel injection (adjust engine idling speed)

Fuel and air

Factory

Factory: Every column incl. initial and annual check
Fuel line (check fuel hoses for cracks or damage)

Fuel and air

Factory

Factory: Initial at 1000 km (600 mi) or 1 month, then marked at 3000 km (1800 mi) or 3 months and 5000 km (3000 mi) or 6 months, repeating from 7000 km (4200 mi) or 9 months; annual check Yamaha WR450F owner's manual 1DX-28199-E0, library.ymcapps.net copy, charts pp.6-3 to 6-6
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Factory

Manual: Clutch (check operation, adjust or replace cable). Factory: Marked initial, 3000km and 5000km columns
Inspect fork seals, stanchions and fork boots

Front end

Factory

Manual: Front fork (check operation and oil leakage). Factory: Marked at 3000km and 5000km columns
Repack / replace steering head bearings

Front end

Factory

Manual: Steering bearings (check play, lubricate with lithium-soap grease). Factory: Marked initial, 3000km and 5000km columns
Clean and grease rear suspension linkage

Rear suspension and frame

Factory

Manual: Rear suspension relay arm and connecting arm pivots (check operation). Factory: Marked at 3000km and 5000km columns
Grease and check center / side stand and springs

Rear suspension and frame

Factory

Manual: Sidestand (check operation, lubricate). Factory: Every column incl. initial and annual check
Grease swingarm pivot

Rear suspension and frame

Factory

Manual: Swingarm (check play, lubricate with lithium-soap grease). Factory: Marked initial, 3000km and 5000km columns
Inspect rear shocks for leaks and damping

Rear suspension and frame

Factory

Manual: Shock absorber assembly (check operation and oil leakage). Factory: Marked at 3000km and 5000km columns
Sidestand switch (check operation)

Rear suspension and frame

Factory

Factory: Initial at 1000 km (600 mi) or 1 month, then marked at 3000 km (1800 mi) or 3 months and 5000 km (3000 mi) or 6 months, repeating from 7000 km (4200 mi) or 9 months; annual check Yamaha WR450F owner's manual 1DX-28199-E0, library.ymcapps.net copy, charts pp.6-3 to 6-6
Brake hoses (check for cracks or damage, check routing and clamping)

Brakes

Factory

Factory: Marked at 3000 km (1800 mi) or 3 months and 5000 km (3000 mi) or 6 months, repeating from 7000 km (4200 mi) or 9 months Yamaha WR450F owner's manual 1DX-28199-E0, library.ymcapps.net copy, charts pp.6-3 to 6-6
Check brake pads and discs

Brakes

Factory

Manual: Front/rear brake (check operation, fluid level, leakage). Factory: Every column incl. initial and annual; pads whenever worn to limit
Front and rear brake switches (check operation)

Brakes

Factory

Factory: Initial at 1000 km (600 mi) or 1 month, then marked at 3000 km (1800 mi) or 3 months and 5000 km (3000 mi) or 6 months, repeating from 7000 km (4200 mi) or 9 months; annual check Yamaha WR450F owner's manual 1DX-28199-E0, library.ymcapps.net copy, charts pp.6-3 to 6-6
Check spoke tension and wheel true

Wheels and tires

Factory

Manual: Wheels (check runout, spoke tightness; tighten spokes). Factory: Marked initial, 3000km and 5000km columns
Check wheel bearings for play

Wheels and tires

Factory

Manual: Wheel bearings (check looseness or damage). Factory: Marked initial, 3000km and 5000km columns
Inspect tire tread, sidewalls and date codes

Wheels and tires

Factory

Manual: Tires (check tread depth, damage, pressure). Factory: Every column incl. initial and annual check
Lubricate control cables and lever pivots

Controls and cables

Factory

Manual: Moving parts and cables; lever and pedal pivots (lubricate). Factory: Every column incl. initial and annual check

Every 4,000 km or 6 months

1 item

Check and adjust valve clearances

Engine

Factory

Manual: Valves (check clearance, adjust). Factory: Marked initial and 5000km/6-month column only

Every 5,000 km or 12 months

4 items

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
Check footrests, pegs, rear brake and gear lever pivots

Rear suspension and frame

Guideline

Every 9,500 km or 12 months

3 items

Check charging voltage and regulator / cut-out

Ignition and electrics

Guideline
Check swingarm bushes for play

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 16,000 km or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 19,500 km or 2 years

2 items

Replace air filter element

Fuel and air

Guideline
Synchronize throttle bodies

Fuel and air

Guideline

Every 20,000 km or 2 years

1 item

Inspect brake hoses; replace old rubber

Brakes

Factory

Manual: Brake hoses (replace). Factory: Every 20000 km (12000 mi) or every two years

Every 24,000 km 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 25,500 km or 4 years

1 item

Replace spark plugs

Engine

Guideline

Every 29,000 km

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 32,000 km or 4 years

1 item

Repack / replace wheel bearings

Wheels and tires

Guideline

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

Every 38,500 km or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

Every 40,000 km or 6 years

1 item

Replace swingarm bushes / bearings

Rear suspension and frame

Guideline

Every 48,500 km 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

1 item

Replace coolant

Engine

Factory

Manual: Cooling system (change, ethylene glycol anti-freeze). Factory: Every 1 year

Every 2 years

4 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline
Rebuild calipers and master cylinders (seals)

Brakes

Factory

Manual: Brake master cylinder and caliper internal components (replace). Factory: Every two years (TIP under chart)
Replace brake fluid

Brakes

Factory

Manual: Brake fluid (change). Factory: Every two years (TIP under chart)

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

2 items

Replace inner tubes and rim tape with tires

Wheels and tires

Guideline
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.