Yamaha YZ 250 F MONSTER ENERGY EDITION (2021) — Specs

Identity

Manufacturer: Yamaha

Model: YZ 250 F MONSTER ENERGY EDITION

Category: Naked

Type: Off-Road Bike

Years: 2021 → 2021

Engine

Displacement (cc): 250

Cylinders: 1

Torque (Nm): 28

Dimensions

Overall length: 2175 mm

Overall width: 825 mm

Overall height: 1290 mm

Wheelbase: 1485 mm

Ground clearance: 335 mm

Weight (kg): 106

Seat height (mm): 970

Tank (L): 6.2

Tires

Front tire: 80/100-21

Rear tire: 100/90-19

Front pressure (bar): 1

Rear pressure (bar): 1

Drivetrain

Drive chain: chain 520ER

Ignition

Spark plug: NGK LMAR9E-J

Plug gap: 0.6-0.7 mm

Fluids & Filters

Engine oil: 10W-40, API SG

Engine oil (with filter, L): 0.75

Engine oil (without filter, L): 0.73

Oil filter: Hiflofiltro HF141

Air filter: Hiflofiltro HFA4905

Coolant (L): 0.93

Brake fluid: DOT 4

Service

Battery: YTX5L-BS

Service interval (km): 6000

Service interval (months): 12

Valve check (km): 12000

Parts and consumables for this motorcycle

Data is gathered with care, but without guarantee. Always confirm critical information with your dealer or workshop.

Service notes

Service interval: every 6,000 km or 12 months, whichever comes first. Valve clearance check every 12,000 km. Valve clearance — intake cold 0.12-0.19 mm, exhaust cold 0.17-0.24 mm. Engine oil: oil grade 10W-40, API SG, 0.75 L with filter change, 0.73 L without filter change. Spark plug: NGK LMAR9E-J (gap 0.6-0.7 mm). Brake fluid: DOT 4. Coolant capacity: 0.93 L. Chain: chain 520ER. Tire pressure: front 1 bar, rear 1 bar (cold). Tire size: front 80/100-21, rear 100/90-19. Always confirm critical values with the workshop manual or an authorised dealer.

OEM and quality aftermarket parts that fit this bike. Always confirm with your dealer before ordering.

Engine oil

Spec: 10W-40, API SG, 0.75 L (with filter), 0.73 L (without filter)

OEM OEM recommended engine oil
Premium Motul 7100 4T (100% Synthetic, Ester)
Premium Motul 5100 4T Technosynthese (Semi-Synthetic)

Which Motul for this bike?

	Motul 7100 4T ✓	Motul 5100 4T
Product	Motul 7100 4T — 100% fully synthetic	Motul 5100 4T — semi-synthetic
Best for	Sport, Naked, Adventure (600cc+), track	Standard, Cruiser, Scooter, daily use
RPM protection	Excellent — ester base, stable under load	Good — for normal riding conditions

Standard Repsol Moto Racing 4T (Synthetic)
Standard Elf Moto 4 Tech (Semi-Synthetic)

Fully Synthetic vs Semi-Synthetic

	Fully Synthetic	Semi-Synthetic
Base oil	100% chemical synthesis (ester or PAO)	Mineral oil + synthetic additives
Heat resistance	Excellent — stable at extreme heat & RPM	Good — suitable for normal temperatures
Cold start	Better — reaches engine faster when cold	Good — adequate for normal climates
Change interval	Longer (up to 10,000 km)	Shorter (5,000–7,000 km typical)
Price	Higher	Lower

Oil filter

Spec: Hiflofiltro HF141

Premium Hiflofiltro HF141
Premium K&N KN-141

Air filter

Spec: Hiflofiltro HFA4905

Standard Hiflofiltro HFA4905

Spark plug

Spec: NGK LMAR9E-J, gap 0.6-0.7 mm

OEM NGK LMAR9E
Premium NGK LMAR9EIX
Standard NGK LMAR9E

Front brake pads

Spec: OEM front pad (EBC equivalent: FA185HH)

Premium EBC FA185HH
Standard EBC FA185 (organic)

Rear brake pads

Spec: OEM rear pad (EBC equivalent: FA208HH)

Premium EBC FA208HH
Standard EBC FA208 (organic)

Drive chain

Spec: chain 520ER | chain 520ER

OEM OEM chain (pitch 520 (or 428 for some commuter 250s))

Front tire

Spec: 80/100-21, 1.0 bar

OEM OEM 80/100-21

Rear tire

Spec: 100/90-19, 1.0 bar

OEM OEM 100/90-19

Battery

Spec: OEM battery: Yuasa YTX5L-BS

Brake fluid

Spec: DOT 4

Standard TotalEnergies HBF4

Coolant

Spec: 0.93 L coolant capacity

Service interval

Spec: 6 000 km / 12 months

OEM Engine oil + oil filter change
OEM Air filter inspection
OEM Spark plug check
OEM Brake fluid replacement: every 2 years

Valve check

Spec: 12 000 km

OEM Intake clearance: cold 0.12-0.19 mm
OEM Exhaust clearance: cold 0.17-0.24 mm

Suspension

Spec: 300 ml YAMAHA S1

OEM Fork oil grade: 300 ml YAMAHA S1