SPEC
 
2 - 1 
GENERAL SPECIFICATIONS 
EC200000 
SPECIFICATIONS 
EC211000 
GENERAL SPECIFICATIONS 
Model name: YZ426FLC (EUROPE)
YZ426FM (USA)
YZ426F(M) (CDN, AUS, NZ, ZA)
Model code number: 5JG1 (USA)
5JG2 (EUROPE)
5JG4 (CDN, AUS, NZ, ZA)
Dimensions:
Overall length 2,171 mm (85.5 in)
Overall width 827 mm (32.6 in)
Overall height 1,303 mm (51.3 in)
Seat height 998 mm (39.3 in)
Wheelbase 1,490 mm (58.7 in)
Minimum ground clearance 373 mm (14.7 in)
Basic weight:
With oil and full fuel tank 113.5 kg (250 lb)
Engine:
Engine type Liquid cooled 4-stroke, DOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 426 cm 
3
 
 (15.0 Imp oz, 14.4 US oz)
Bore  
   
´  
   
stroke 95.0   
´  
 60.1 mm (3.74   
´  
 2.37 in)
Compression ratio 12.5 : 1
Starting system Kick starter
Lubrication system: Dry sump
Oil type or grade:
Engine oil SAE 20W40 SH or SAE 10W30 SH
Oil capacity:
Engine oil
Periodic oil change 1.5 L (1.32 Imp qt, 1.59 US qt)
With oil filter replacement 1.6 L (1.41 Imp qt, 1.69 US qt)
Total amount 1.7 L (1.50 Imp qt, 1.80 US qt)
Coolant capacity (including all routes): 1.2 L (1.06 Imp qt, 1.27 US qt)
Air filter: Wet type element
-20
-4-10
140
3010
5020
6830
8640 50
104
122¡CTemp.
¡F
10W/30
10W/40
20W/40
20W/50
 
2 
 
3 - 6
INSP
ADJ
 
COOLANT REPLACEMENT 
EC353011 
COOLANT REPLACEMENT
WARNING
 
Do not remove the radiator cap when the 
engine is hot.
CAUTION:
 
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: 
l 
Engine guard  
1 
  
l 
Coolant drain bolt  
2 
 
3. Remove: 
l 
Radiator cap
Drain the coolant completely.
4. Clean: 
l 
Cooling system
Thoroughly flush the cooling system
with clean tap water.
5. Install: 
l 
Copper washer 
l 
Coolant drain bolt 
l 
Engine guard
New
T R..10 Nm (1.0 m · kg, 7.2 ft · lb)
 
6. Fill: 
l 
Radiator 
l 
Engine
To specified level. 
Recommended coolant:
High quality ethylene glycol
anti-freeze containing 
anti-corrosion for 
aluminum engine
Coolant  
1 
 and water (soft water)  
2 
mixing ratio:
50 %/50 %
Coolant capacity:
1.2 L (1.06 Imp qt, 1.27 US qt)