Husqvarna 2005 CR125 Workshop Manual Download

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N° 8000A4439

(06-04)

A.6

ENGINE

Single-cylinder, two-stroke engine, with lamellar suction in the

crankcase and mechanical control H.T.S. valve on the exhaust

system.
Bore ...........................................................54 mm/2.12 in.
Stroke......................................................54,5 mm/2,14 in.
Capacity ........................................124,82 cm

/7.61 cu.in.

Compression ratio (with closed ports) ............................8,8:1

FUEL FEEDING

Intake setting by lamellar valve.
DISTRIBUTION DIAGRAM
TRANSFER: ................................................................128°
EXHAUST: .................................................................184°
Carburetor ........................................................Mikuni TMX 38

LUBRICATION

ENGINE
4% (1:25) of oil-gasoline mix (during running) NOT LESS than

3% (1:33)when running is over.
SHIFTING and MAIN TRANSMISSION
Through the oil contained in the engine block.

COOLING

With liquid circulation through a pump. Two radiators are pro-

vided in the thermal assembly front.

IGNITION

Capacity discharge electronic ignition with variable advance;

analogic for WR125, and digital for CR 125.

Make ................................................................KOKUSAN
Ignition advance (piston stroke before T.D.C.)

..............................................1,2 mm/0.047 in.(15°)

...........................................0,08 mm/0.0031 in. (4°)

Spark plug ........................

Champion QN 84 or NGK BR9 EG

Electrode gap .........................................0,6 mm/0.0236 in.

STARTING

Kick-start.

TRANSMISSION

Cluster constant-mesh gears.
Primary ratio ...........................................Z 22/71= 1:3,227

Gear ratios

1st ..............................................................Z 14/33=1:2,357
2nd ............................................................Z 15/28=1:1,866
3rd ............................................................Z 19/30=1:1,579
4th..............................................................Z 20/27=1:1,350
5th..............................................................Z 22/26=1:1,181
6th..............................................................Z 21/21=1:1,000
Finale drive ratio ..........................................Z 13/50=1:3,846
Gearing chain

(CR 125)........REGINA 135 RX -5/8”x1/4”

or D.I.D. 520-DS 5/8”x1/4”

(WR 125) ................REGINA 135 ORN-A

or D.I.D. 520 V6

Total ratios

1st ........................................................................29,258
2nd

................................................................................

23,170

3rd

................................................................................

19,599

4th

..................................................................................

16,757

5th

..................................................................................

14,669

6th

..................................................................................

12,412

Oil-bath multi-disc clutch type.

BRAKES
Front brake

Perforated fixed disc with hydraulic control and floating caliper.
Disc diameter ..........................................260 mm/10.23 in.
Brake caliper .........................................................BREMBO
Pad area............................................33,4 cm

/5.18 sq.in.

Rear brake

Perforated floating disc with hydraulic control and floating caliper.
Disc diameter ..........................................220 mm/8.661 in.
Brake caliper .........................................................BREMBO
Pad area............................................29,5 cm

/3.94 sq.in.

FRAME

Single beam with closed twin cell, made of high strenght stain-
less steel tubes. Made up o rectangular and square high tensile
steel tubes.

Steering angle .......................................................43° each
Steering axis angle.........................................................25°
Front fork caster ...................................104 mm/4.1 in. (WR)

107 mm/4.21(WR)

SUSPENSIONS
Front suspension

Telescopic-hydraulic up-side down fork with led pin, adjustable

in compression and rebound.
Producer .........................................................MARZOCCHI
Legs diameter ..............................................45 mm/1.77 in.
Front wheel bulb position
(on the sliding axis) ....................................300 mm/11.8 in.

Rear suspension

Light alloy swinging fork with progressive leverage suspensions

(SOFT DAMP system) and hydraulic single-damper with helical

spring. The hydraulic brake compression (double), extension,

and the spring preload can be adjusted.
Damper make .........................................................SACHS
Rear wheel vertical travel ............................320 mm/12.6 in.

WHEELS

Light alloy

front

rim.

Manufacturer and type ...............................TAKASAGO Excel
Dimensions .........................................................1,60"x21"
Light alloy

rear

rim.

Manufacturer and type ...............................TAKASAGO Excel
Dimensions ........................2,15"x19" (CR); 2,15”x18” (WR)

TYRES
Front

Make .....................“Pirelli” (CR); “Michelin” or “Pirelli” (WR)

Type ........................................................51R-MT 32A (CR);

Enduro Competition 3 or MT83 Scorpion (WR)

Dimensions .....................80/100-21” (CR); 90/90-21” (WR)

Inflation pressure (cold):...........0,9÷1,0 Kg/cm

(12,8÷14,2 psi)

Rear

Make ...................... “Pirelli” (CR); “Michelin” or “Pirelli”(WR)