No photo of this model in the library yet.

Bajaj · Modern air-cooled single (2000-)

Dominar 250

Library entry covers 2021-2025

28 factory 31 guideline

Published source

Bajaj Dominar 250 Owner's Manual, Periodic Maintenance & Lubrication Chart pp.44-51 (Bajaj Auto PDF on cdn.bajajauto.com; retrieved via Wayback capture 2025-12-22)

Factory owner's handbook. Covers Dominar 250 owner's manual (BS6).

Open the source

59 items for a 2021 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: Hand lever, cable
Final drive: Chain
Front suspension: Telescopic fork
Rear suspension: Swingarm, twin shocks
Front brake: Disc, hydraulic
Rear brake: Drum (or band / belt rim)
Wheels: Spoked, tubed
Sidecar: No sidecar

Maintenance schedule

2021 Bajaj Dominar 250

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

1 item

Check lights, horn, brake light switches

Pre-ride / on the road

Guideline

On the road: every 311 mi

1 item

Lubricate drive chain

Pre-ride / on the road

Factory

Manual: Drive chain (customer). Factory: Customer to use OKS chain lube spray at every 500 km.

On the road: every 600 mi

1 item

Check chain slack and rear wheel alignment

Pre-ride / on the road

Guideline

On the road: every 3,107 mi

1 item

Check tire pressures

Pre-ride / on the road

Factory

Manual: Tire air pressure. Factory: C,A every service.

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 3,000 mi or 12 months

6 items

Check throttle cable(s) free play and return

Fuel and air

Guideline
Inspect chain and sprockets for wear (measure stretch)

Final drive

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
Check spoke tension and wheel true

Wheels and tires

Guideline
Check wheel bearings for play

Wheels and tires

Guideline

Every 3,107 mi

7 items

All fasteners tightness

Engine

Factory

Factory: C,T every service (axles, swing arm axle, engine mounts, footrests).
Check engine breather and oil return

Engine

Factory

Manual: Engine breather tube for cracks. Factory: C,R (replace if required) each service from 9500-10000 km.
Clean battery terminals, check charge and strap

Ignition and electrics

Factory

Manual: Battery, connections & health by load tester. Factory: C,A,L,T every service; petroleum jelly on terminals.
Adjust clutch free play, lubricate cable and lever pivot

Primary and gearbox

Factory

Manual: Clutch & Throttle cable free play. Factory: C,A every service.
Clean drive chain thoroughly (remove and soak, re-lube)

Final drive

Factory

Manual: Sealed Drive chain wear - Clean, Lubricate & adjust. Factory: CL,L,A every service.
Check steering head bearing adjustment

Front end

Factory

Manual: Steering play. Factory: C,A every service.
Lubricate control cables and lever pivots

Controls and cables

Factory

Manual: General lubrication - Clutch lever. Factory: L every service.

Every 4,000 mi or 12 months

1 item

Lubricate brake cam spindles, check linings and drums

Brakes

Guideline

Every 6,000 mi or 12 months

5 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.
Check charging voltage and regulator / cut-out

Ignition and electrics

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 6,214 mi

7 items

Change engine oil

Engine

Factory

Manual: Engine oil. Factory: R at 1st service, every 10,000 km; top-up between. Services 500-750 km, then every 5000 km to 75000.
Clean oil strainers / mesh screens

Engine

Factory

Manual: Engine Oil strainer & Evacuation oil strainer. Factory: Clean at time of oil change.
Inspect, clean and gap spark plugs

Engine

Factory

Manual: Spark plug clean & check gap. Factory: CL,A every 10,000 km.
Rear sprocket fasteners for looseness

Engine

Factory

Factory: C,T at 1st service then every 10,000 km.
Replace oil filter

Engine

Factory

Manual: Engine oil Filter. Factory: Replace in 1st service and at every 10,000 km.
Repack / replace steering head bearings

Front end

Factory

Manual: Steering stem bearing & Cap steering bearing. Factory: C,CL,L at 1st service then every 10,000 km.
Rear wheel rubber shock dampers

Wheels and tires

Factory

Factory: C,R at 1st service then every 10,000 km.

Every 9,321 mi

1 item

Check brake pads and discs

Brakes

Factory

Manual: Brake pads Front & Rear for wear limit. Factory: Check every service; replace at every 15,000 km.

Every 10,000 mi or 2 years

1 item

Compression test (or leak-down)

Engine

Guideline

Every 12,000 mi or 2 years

1 item

Synchronize throttle bodies

Fuel and air

Guideline

Every 12,427 mi

3 items

Check and adjust valve clearances

Engine

Factory

Manual: Valve tappet clearance. Factory: Check & adjust at every 20,000 km.
Replace air filter element

Fuel and air

Factory

Manual: Air cleaner element. Factory: Replace viscous filter every 20,000 km; cleaning not required.
Grease and check center / side stand and springs

Rear suspension and frame

Factory

Manual: Side stand pivot pin. Factory: C,L at 1st service then every 20,000 km.

Every 15,000 mi

1 item

Replace brake linings / skim drums (wear based)

Brakes

Guideline

Every 18,000 mi

1 item

Replace chain and sprockets (wear based)

Final drive

Guideline

Every 18,641 mi or 3 years

2 items

Inspect coolant hoses and clamps

Engine

Factory

Manual: Coolant & Radiator hoses. Factory: Replacement every 30000 km or 3 years; level/clamps each service.
Replace coolant

Engine

Factory

Manual: Coolant & Radiator hoses. Factory: Replacement every 30000 km or 3 years, whichever earlier.

Every 18,641 mi

4 items

Replace spark plugs

Engine

Factory

Manual: Spark plug. Factory: Replace at every 30,000 km.
Change fork oil

Front end

Factory

Manual: Front fork oil & seal. Factory: Replace oil, oil seal and dust seal at every 30,000 km; check each service.
Rebuild calipers and master cylinders (seals)

Brakes

Factory

Manual: Master / Caliper seals. Factory: Replace at every 30,000 km.
Replace brake fluid

Brakes

Factory

Manual: Brake fluid (DOT 4). Factory: Top up each service; replace with master/caliper seals every 30,000 km.

Every 20,000 mi 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 24,000 mi or 4 years

1 item

Replace fuel filter

Fuel and air

Guideline

Every 24,855 mi

2 items

Water Pump seals

Engine

Factory

Factory: Replace at every 40,000 km.
Grease swingarm pivot

Rear suspension and frame

Factory

Manual: Swing arm NRB. Factory: Lubricate NRB at every 40,000 km.

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

2 items

Inspect wiring, bullet connectors and ground points

Ignition and electrics

Guideline
Inspect frame, welds and lugs for cracks

Rear suspension and frame

Guideline

Every 4 years

2 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

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.