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Yamaha WR250F (2015+, fuel injected) Maintenance Schedule and Service Intervals

2016-2018 Yamaha WR250F

This is the maintenance schedule and associated service intervals for the Yamaha WR250F.

The WR250F is an off-road motorcycle, but a little less extreme than the street-legal WR250R or the more extreme race-oriented YZ250.

Built since 2001, the WR250F has gone through a few evolutionary changes along the way, but a lot of the maintenance requirements are roughly the same. The most important recent turning point was adding fuel injection in 2015, so this maintenance schedule is for the 2015+ WR250F with fuel injection.

In 2018, the Yamaha WR250F was overhauled (more power!) and the 2020 Yamaha WR250F was overhauled yet again. But the changes weren’t significant enough to change the maintenance requirements.

The latest WR250F’s maintenance schedule has a lot in common with its bigger sibling, the Yamaha WR450F.

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What you need to service the Yamaha WR250F

Below are the consumables you need to service the Yamaha WR250F.

OilYamalube 10W-40 or Yamalube 10W-50 per the manual (and it’s affordable). Don’t over-torque the bolt (spec is 43 Nm/32 lb-ft for the oil drain bolt per the manual) — use a torque wrench if you don’t have experience with how much torque is enough.
Oil filterOil filter is part # 5D3-13440-09-00. You can usually buy it cheaply in packs of 3-4. The K&N part equivalent is KN-140.
Chain lubricantThe chain needs to be lubricated every 800 km/500 miles (or more, if it gets wet/dirty). Motul chain paste is cheap and well-loved.
Cable lubricantRemember to lubricate your clutch cable (and brake cables if you have them) with a cable lubricant. Protect All Cable Life is a good general-purpose lubricant.
Brake fluidSpec is to use DOT-4 brake fluid.
CoolantUse 1.03L (about 1.1 US qt) of ethylene glycol pre-mix coolant with a 50-50 mixture.
Front brake padsGenuine part number for front brake pads is B29-25805-00. See the WR250F brake pad set.
Rear brake padsGenuine part number for rear brake pads is 1C3-W0046-B0. See the WR250F brake pad set.
Spark plugsNGK LMAR8G (you just need 1!), with a spark plug gap of 0.7-0.8mm (use a spark plug gapping tool), torqued to 13 Nm or 9.4 ft-lb (use a torque wrench)
Air filterGenuine part number is 1SL-14451-00. You can also use the K&N equivalent YA-4514XD (2015+) or YA-4503 (pre-2014).
Lithium greaseUse a lithium soap based grease for all the important greasing points.
Yamaha WR250F parts needed

2015+ Yamaha WR250F Maintenance Schedule

Below is the maintenance schedule for the Yamaha WR250F.

The maintenance for the Yamaha WR250F is broken into two sections: periodic maintenance for emission control systems, and general maintenance and lubrication.

Tips on the maintenance schedule

  • From 4200 mi (7000 km) or 9 months, repeat the maintenance intervals starting from 1800 mi (3000 km) or 3 months
  • Items marked with an asterisk (*) should be — according to Yamaha — performed by a Yamaha dealer as they require special tools, data and technical skills (unless you’re game).

Air filter

  • The WR250F has a disposable air filter — do not clean it with compressed air or you’ll damage it.
  • The air filter element needs to be replaced more frequent when riding in unusually wet or dusty areas (i.e…. where you ride a WR250F)

Hydraulic brake service

  • After disassembling the brake master cylinders and calipers, always change the fluid.
  • Regularly check the brake and clutch fluid levels and fill the reservoirs as required
  • Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid
  • Replace the brake hoses every four years or if cracked or damaged.

Periodic Maintenance Emission Control System

PartMaintenance job600 mi (1000 km) or 1 month1800 mi (3000 km) or 3 months3000 mi (5000 km) or 6 months
Fuel line*•Check fuel hoses for cracks or damage
•Replace if necessary
Spark plugs•Check condition
•Adjust gap and clean
•Replace if necessary with
NGK LMAR8G
Valve clearance*•Check and adjust valve clearance when engine is cold
Air filter element*•Clean with solvent and apply foam air-filter oil equivalent oil
•Replace if necessary (YA-4514XD)
Breather system*•Check ventilation hose for cracks or damage and drain any deposits
•ReplaceEvery 2 years
Fuel injection*•Adjust engine idling speed
Exhaust system•Check for leakage
•Tighten if necessary
•Replace gasket(s) if necessary
Engine oil•Change (warm engine before draining) with Yamalube 10W-40
Engine oil filter•Replace (K&N part YA-4514XD)
Engine oil strainer•Clean
Periodic maintenance for the Yamaha WR250F

General Maintenance and Lubrication Chart

PartMaintenance job600 mi (1000 km) or 1 month1800 mi (3000 km) or 3 months3000 mi (5000 km) or 6 months
Clutch•Check operation.
•Adjust or replace cable.
Cooling system*•Check hoses for cracks of damage
•Replace if necessary
•Replace with ethylene glycol anti-freeze coolant (ethylene glycol pre-mix) every 1 yearEvery 1 year
Spark arrester*•Clean
Front brake*•Check operation, fluid level, and for fluid leakage
•Replace brake pads if necessary (OEM)
•Replace brake fluid every 1 yearEvery 1 year
Rear brake*•Check operation, fluid level, and for fluid leakage
•Replace brake pads if necessary
•Replace brake fluid every 1 yearEvery 1 year
Brake hoses*•Check for cracks or damage
•ReplaceEvery 4 year
Wheels*•Check runout, spokes tightness and for damage
•Tighten spokes if necessary
Tires*• Check tread depth and for damage.
• Replace if necessary.
• Check air pressure.
• Correct if necessary.
Wheel bearings*• Check bearings for smooth operation.
• Replace if necessary.
Swingarm pivot bearings*• Check bearing assemblies for looseness
• Moderately repack with lithium-soap-based grease
Drive chain• Check chain slack/alignment and
condition.
• Adjust and lubricate chain with a
special O-ring chain lubricant
thoroughly.
Every ride
Steering bearings*• Check bearing assemblies for
looseness.
• Moderately repack with lithium-
soap-based grease every 1200 mi (2000 km) or 12 months (whichever comes first)
Brake and clutch lever pivot shafts• Apply lithium-soap-based grease (all-purpose grease) lightly.
Brake pedal pivot shafts• Apply lithium-soap-based grease (all-purpose grease) lightly.
Sidestand pivot• Check operation
• Apply lithium-soap-based grease (all-purpose grease) lightly.
Front fork*• Check operation and for oil leakage.
• Replace if necessary.
Shock absorber assembly*• Check operation and for oil leakage.
• Replace if necessary.
Rear suspension link pivots*• Apply molybdenum disulfide grease lightly
Control cables*• Apply Yamaha chain and cable lube or engine oil 10W-30 thoroughly
Throttle grip housing and cable*• Check operation and free play.
• Adjust the throttle cable free play
if necessary.
• Lubricate the throttle grip housing
and cable.
Chassis fasteners*• Check all chassis fitting and fasteners
• Correct if necessary
Battery• Check terminal for looseness and corrosion
General maintenance for the WR250F

About the Yamaha WR250F

The WR250F is an off-road trail bike that’s not purpose-built for racing.

Until 2014, the WR250F had kind of been neglected by Yamaha. Top Speed said that “for the most part, it had gradually fallen from being a hot ticket to same-old, same-old mediocrity.”

Yamaha’s 2015+ model WR250F re-invigorated the line with the revolutionary rearward-slanted, fuel injected, 249cc, DOHC four-stroke engine featuring four titanium valves, sitting inside a bilateral beam frame combined with a host of technology which massage the bike from its YZ250F-base to an off-road performer.

It has KYB suspension front and rear, a 7.5-litre fuel tank, an 18-inch rear wheel, electric start, a radiator fan, skid plate, side stand, wide-ratio six-speed gearbox and a top-mounted airbox.

Manual for the Yamaha WR250F

2016-2018 Yamaha WR250F Maintenance schedule screenshot from manual

The above information was gleaned from the owner’s manual for the 2016 Yamaha WR250F. It’s similar to that from other years.

You can download it from Yamaha’s website here.

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