2001 YAMAHA YFM400F oil type

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Engine oil
Make sure the engine oil is at the specified lev-
el. Fill with oil as necessary. (See pages 8-31 ~
8-41 for details.)
-20°
-10°0°10°20°30°40°
50°C
5W/30
10W/30
10W/40
20W/50
15W/4020W/40
Recommended oil:
Recommended engine oil classification:
API Service SE, SF, SG type or higher

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3. Refill with the same type of brake fluid.
Mixing fluids may result in a harmful
chemical reaction and lead to poor brake
performance.
4. Be careful that water does not enter the
master cylinder reservoir when refilling.
Water will significantly lower the boiling
point of the fluid and may result in vapor
lock.
5. Brake fluid may deteriorate painted sur-
faces or plastic parts. Always clean up
spilled fluid immediately.
6. Have a Yamaha dealer check the cause if
the brake fluid level goes down.

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SPECIFICATIONS
Model YFM400FA / YFM400FWAN
Dimensions:
Overall length 1,965 mm
Overall width 1,070 mm
Overall height 1,120 mm
Seat height 820 mm
Wheelbase 1,225 mm
Minimum ground clearance 245 mm
Minimum turning radius 3,000 mm
Basic weight:
With oil and full fuel tank 262 kg
Engine:
Engine type Liquid-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 401 cm
3

Bore
´
stroke 84.5
´
71.5 mm
Compression ratio 10.5 :1
Starting system Electric and recoil starter
Lubrication system Wet sump

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101010101010101010101

Engine oil:
Type
-20°
-10°0°10°20°30°40°
50°C
5W/30
10W/30
10W/40
20W/5020W/4015W/40

Recommended engine oil classification: API Service SE, SF, SG type or higher
Quantity:
Periodic oil change
With oil filter replacement
Total amount2.3 L
2.4 L
2.6 L Model YFM400FA / YFM400FWAN
CAUTION
:
Be sure to use motor oils that do not contain anti-
friction modifiers. Passenger car motor oils (often
labeled “Energy Conserving”) contain anti-friction
additives which will cause clutch and/or starter
clutch slippage, resulting in reduced componentlife and poor engine performance.

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Final gear oil:
Type SAE 80 API “GL-4” Hypoid gear oil
Quantity
Periodic oil change 0.19 L
Total amount 0.22 L
Differential gear oil:
Type SAE 80 API “GL-4” Hypoid gear oil
Quantity
Periodic oil change 0.35 L
Total amount 0.42 L
Air filter: Wet type element
Fuel:
Type Unleaded gasoline
Fuel tank capacity 15 L
Fuel reserve amount 4.5 L
Carburetor:
Type/quantity BSR33/1
Manufacturer MIKUNIModel YFM400FA / YFM400FWAN

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Brake:
Front brake type Dual disc brake
operation Right hand operation
Rear brake type Single disk brake
operation Left hand and right foot operation
Suspension:
Front suspension Double wishbone
Rear suspension Swingarm (monocross)
Shock absorber:
Front shock absorber Coil spring / oil damper
Rear shock absorber Coil spring / oil damper
Wheel travel:
Front wheel travel 160 mm
Rear wheel travel 180 mm
Electrical:
Ignition system DC-C.D.I.
Generator system A.C. magneto
Battery type YTX20L-BS
Battery voltage, capacity 12 V, 18 AH
Headlight type: Krypton bulbModel YFM400FA / YFM400FWAN