Honda CR 125R 2002 Sevice Manual page 9

GENERAL INFORMATION
- GENERAL (Cont'dl
ITEM
SPECIFICATIONS
ENGINE
Bore and stroke 54.0 x 54.5 mm (2.13 x 2.15 in)
Displacement 124.82 cm
3
(7.6 cu-in)
Compression ratio
2000 - 2001:
8.75 : 1
After 2001 :
8.7 : 1
Lubrication system
Fuel/oil mix
Cooling system Liquid cooled
Air filtration
Oiled polyurethane foam
Crankshaft type
Assembled type
Engine dry weight
18.4 kg (40.5 Ibs)
Cylinder arrangement
Single cylinder. inclined 18.5° from vertical
CARBURETOR Carburetor type
Piston valve type
Venturi diameter 36 mm (1 .4 in)
DRIVE TRAIN Clutch system Multi-plate, wet
Clutch operation system
Cable operated
Transmission
Constant mesh, 5-speed
Primary reduction 3.150 (63/20)
Final reduction 2000 - 2001: 4.000 (52/ 13)
After 2001:
3.923 (51/13)
Gear ratio
, st
2000 - 2001: 2.357 (33/ 14)
After 2001: 2.307 (30/ 13)
20d
1.867 (28/15)
3cd 2000 - 2001: 1.579 (30; 19)
After 2001: 1.529 (26/17)
4th
2000 - 2001:
1.333 (28/21)
After 2001: 1.294 (22/17)
5,h
1.130 (26/23)
Gearshift pattern
left foot operated return system, 1 - N - 2 - 3 - 4 - 5
ELECTRICAL Ignition system COl (Capacitive Discharge Ignition)
1-5