2-1
SPECGENERAL SPECIFICATIONS
Model name: YZ125W1 (USA, CDN)
YZ125 (EUROPE, ZA)
YZ125W (AUS, NZ)
Model code number: 1C39 (USA, CDN)
1C3A (EUROPE)
1C3C (AUS, NZ, ZA)
Dimensions: USA, AUS, NZ, ZA EUROPE, CDN
Overall length 2,135 mm 2,139 mm
(84.1 in) (84.2 in)
Overall width 827 mm←
(32.6 in)
Overall height 1,315 mm 1,318 mm
(51.8 in) (51.9 in)
Seat height 997 mm 998 mm
(39.3 in) (39.3 in)
Wheelbase 1,443 mm←
(56.8 in)
Minimum ground clearance 386 mm 388 mm
(15.2 in) (15.3 in)
Dry weight:
Without oil and fuel 86.0 kg (189.6 lb)
Engine:
Engine type Liquid cooled 2-stroke, gasoline
Cylinder arrangement Single cylinder, forward inclined
Displacement 124 cm
3(4.36 lmp oz, 4.19 US oz)
Bore ×Stroke 54 ×54.5 mm (2.126 ×2.146 in)
Compression ratio 8.6~10.7 : 1
Starting system Kick starter
Lubrication system: Premix (30 : 1)(Yamalube 2-R)
Oil type or grade (2-Cycle):
Transmission oil Yamalube 4 (10W-30) or SAE 10W-30 type SE
motor oil
Periodic oil change 0.66 L (0.58 Imp qt, 0.69 US qt)
Total amount 0.70 L (0.62 Imp qt, 0.74 US qt)
Coolant capacity (including all routes): 0.9 L (0.79 Imp qt, 0.95 US qt)
Air filter: Wet type element
Fuel:
Type Premium unleaded gasoline
only with a research octane
number of 95 or higher
Tank capacity 8.0 L (1.76 Imp gal, 2.11 US gal)
EC200000
SPECIFICATIONSEC211000
GENERAL SPECIFICATIONS
1C3-9-32-2A 4/29/06 10:17 AM Page 2
3-6
INSP
ADJ
COOLANT REPLACEMENT
cC
Take care so that coolant does not splash
on painted surfaces. If it splashes, wash it
away with water.
1. Place a container under the engine.
2. Remove:
9Coolant drain bolt 1
3. Remove:
9Radiator cap
Drain the coolant completely.
4. Clean:
9Cooling system
Thoroughly flush the cooling system with
clean tap water.
5. Install:
9Copper washer
9Coolant drain bolt
6. Fill:
9Radiator
9Engine
To specified level.
Recommended coolant:
High quality ethylene glycol
anti-freeze containing
anti-corrosion for
aluminum engine
Coolant 1 1
and water
(soft water) 2 2
mixing ratio:
50%/50%
Coolant capacity:
0.9 L (0.79 Imp qt, 0.95 US qt)
10 Nm (1.0 m•kg, 7.2 ft•lb)
1C3-9-32-3A 5/1/06 9:01 AM Page 20
