Yamaha YZF-R125 Owners Manual: Specifications

Dimensions:

Overall length:

2015 mm (79.3 in)

Overall width:

660 mm (26.0 in)

Overall height:

1065 mm (41.9 in)

Seat height:

818 mm (32.2 in)

Wheelbase:

1355 mm (53.3 in)

Ground clearance:

155 mm (6.10 in)

Minimum turning radius:

3100 mm (122.0 in)

Weight:

With oil and fuel:

138.0 kg (304 lb)

Engine:

Engine type:

Liquid cooled 4-stroke, SOHC

Cylinder arrangement:

Forward-inclined single cylinder

Displacement:

124 cm³

Bore × stroke:

52.0 × 58.6 mm (2.05 × 2.31 in)

Compression ratio:

11.20 :1

Starting system:

Electric starter

Lubrication system:

Wet sump

Engine oil:

Type:

SAE 10W-30, SAE 10W-40, SAE 15W-40, SAE 20W-40 or SAE 20W-50


Recommended engine oil grade:

API service SG type or higher, JASO standard MA

Engine oil quantity:

Without oil filter element replacement:

0.95 L (1.00 US qt, 0.84 Imp.qt)

With oil filter element replacement:

1.00 L (1.06 US qt, 0.88 Imp.qt)

Cooling system:

Coolant reservoir capacity (up to the maximum level mark):

0.25 L (0.26 US qt, 0.22 Imp.qt)

Radiator capacity (including all routes):

1.00 L (1.06 US qt, 0.88 Imp.qt)

Air filter:

Air filter element:

Dry element

Fuel:

Recommended fuel:

Premium unleaded gasoline only

Fuel tank capacity:

13.8 L (3.65 US gal, 3.04 Imp.gal)

Fuel reserve amount:

1.6 L (0.42 US gal, 0.35 Imp.gal)

Fuel injection:

Throttle body:

ID mark:

5D71 00

Spark plug (s):

Manufacturer/model:

NGK/CR8E

Spark plug gap:

0.7-0.8 mm (0.028-0.031 in)

Clutch:

Clutch type:

Wet, multiple-disc

Transmission:

Primary reduction system:

Helical gear

Primary reduction ratio:

73/24 (3.042)

Secondary reduction system:

Chain drive

Secondary reduction ratio:

48/14 (3.429)

Transmission type:

Constant mesh 6-speed

Operation:

Left foot operation

Gear ratio:

1st:

34/12 (2.833)

2nd:

30/16 (1.875)

3rd:

30/22 (1.364)

4th:

24/21 (1.143)

5th:

22/23 (0.957)

6th:

21/25 (0.840)

Chassis:

Frame type:

Semi double cradle

Caster angle:

24.20

Trail:

86.1 mm (3.39 in)

Front tire:

Type:

Tubeless

Size:

100/80-17 M/C 52H

Manufacturer/model:

PIRELLI/SPORT DEMON

Manufacturer/model:

MICHELIN/PILOT SPORTY

Rear tire:

Type:

Tubeless

Size:

130/70-17 M/C 62H

Manufacturer/model:

PIRELLI/SPORT DEMON

Manufacturer/model:

MICHELIN/PILOT SPORTY

Loading:

Maximum load:

185 kg (408 lb)

(Total weight of rider, passenger, cargo and accessories)

Tire air pressure (measured on cold tires):

Loading condition:

0-90 kg (0-198 lb)

Front:

175 kPa (1.75 kgf/cm², 25 psi)

Rear:

200 kPa (2.00 kgf/cm², 29 psi)

Loading condition:

90-185 kg (198-408 lb)

Front:

175 kPa (1.75 kgf/cm², 25 psi)

Rear:

225 kPa (2.25 kgf/cm², 33 psi)

Front wheel:

Wheel type:

Cast wheel

Rim size:

17xMT2.75

Rear wheel:

Wheel type:

Cast wheel

Rim size:

17 x MT3.75

Front brake:

Type:

Single disc brake

Operation:

Right hand operation

Recommended fluid:

DOT 4

Rear brake:

Type:

Single disc brake

Operation:

Right foot operation

Recommended fluid:

DOT 4

Front suspension:

Type:

Telescopic fork

Spring/shock absorber type:

Coil spring/oil damper

Wheel travel:

130.0 mm (5.12 in)

Rear suspension:

Type:

Swingarm (monocross)

Spring/shock absorber type:

Coil spring/oil damper

Wheel travel:

125.0 mm (4.92 in)

Electrical system:

Ignition system:

TCI (digital)

Charging system:

AC magneto

Battery:

Model:

12N5.5-3B / YUASA

Voltage, capacity:

12 V, 5.5 Ah

Headlight:

Bulb type:

Halogen bulb

Bulb voltage, wattage × quantity:

Headlight:

12 V, 55 W × 2

Tail/brake light:

LED x 8

Front turn signal light:

12 V, 10.0 W × 2

Rear turn signal light:

12 V, 10.0 W × 2

Auxiliary light:

12 V, 5.0 W × 2

Meter lighting:

LED

Neutral indicator light:

LED

High beam indicator light:

LED

Turn signal indicator light:

LED

Coolant temperature warning light:

LED

Engine trouble warning light:

LED

Fuses:

Main fuse:

20.0 A

Headlight fuse:

15.0 A

Signaling system fuse:

7.5 A

Ignition fuse:

7.5 A

Radiator fan fuse:

5.0 A

    Storage
    Short-term Always store your motorcycle in a cool, dry place and, if necessary, protect it against dust with a porous cover. NOTICE Storing the motorcycle in a poorly ventilated room or c ...

    Consumer information
    ...

    Other materials:

    Checking the cooling system
    1. Remove: Side covers Upper side cowlings Refer to "GENERAL CHASSIS" on page 4-1. 2. Check: Radiator "1" Radiator inlet hose "2" Radiator outlet hose "3" Coolant reservoir hose "4" Water pump breather hose "5" Cracks/damage → Replace. Refer to "RADIATOR" on page 6-1 ...

    Installing the valves
    The following procedure applies to all of the valves and related components. 1. Deburr: Valve stem end (with an oil stone) 2. Lubricate: Valve stem "1" Valve stem seal "2" (with the recommended lubricant) 3. Install: Lower spring seat "1" Valve stem seal "2" V ...

    Installing the clutch
    1. Install: Conical spring washer "1" NOTE: Install the conical spring washer as shown in the illustration. 2. Install: Clutch housing Thrust washer "1" NOTE: Be sure to install the thrust washer so that its sharp edge "a" is facing away from the clutch boss. 3. Instal ...

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