Technical Data - Husqvarna 2011 WR 250 Merkmale, Gebrauch, Wartung

TECHNICAL DATA

ENGINE
Type................................................... single cylinder, 2 stroke
Cooling ..........................................................................liquid
Bore (250) ...................................................................2.61 in
Bore (300) ...................................................................2.83 in
Stroke ..........................................................................2.83 in
Displacement (250) ............................................ 15.21 cu. in.
Displacement (300) ............................................ 17.87 cu. in.
Compression ratio
(with closed ports) WR 250 . . . . . . . . . . . . . . . . . . . . . . .8,4:1
(with closed ports) WR 300 . . . . . . . . . . . . . . . . . . . . . . .6,9:1
Starting ....................................................................kick start
TIMING SYSTEM
Type..................................................lamellar valve on suction
H.T.S. valve with mechanical control on the exhaust
LUBRICATION
Engine . . . . . . . . . . . . . . . . . . . . 3% (1:32) of oil-gasoline mix
during running in; NOT LESS than 2% (1:50) when running in is
over
Primary drive transmission/Gearbox by the oil contained in the
crankcase
IGNITION
Type.. . . . . . . . . . . . . . . . electronic digital capacitor-discharge
type, with variable advance
Spark plug type . . . . . . . . . . . . . . . . . . . . . . . . . .NGK BR8EG
Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0236÷0.0275 in.
FUEL SYSTEM
Type . . . . . . . . . . . . . . . . . . . . . Carburettor "Mikuni" TMX 38
Venturi diameter .........................................................1.49 in.
High speed jet ...................................................................380
Low speed jet ...................................................................17,5
Starting jet ..........................................................................50
Main nozzle .............................................................R-8 (914)
Floater (n° 2) .................................................................g 6,1
Throttle piston ....................................................................5,0
Metering pin .......................................................................YC
Metering pin slot ...............................................................2nd
Idle mixture adjusting screw ...................................... rounds 2
PRIMARY DRIVE
Drive pinion gear- Clutch ring gear ......................... Z 27- Z 69
Transmission ratio .........................................................2,555
CLUTCH
Type................oil bath multiple disc clutch, mechanical control
TRANSMISSION
Type.................................................. constant mesh gear type
Transmission ratio
1st gear ........................................................2,142 (z 30/14)
2nd gear .......................................................1,750 (z 28/16)
3rd gear .......................................................1,437 (z 23/16)
4th gear ........................................................1,210 (z 23/19)
5 th gear .......................................................1,053 (z 20/19)
SECONDARY DRIVE
Transmission sprocket- Rear wheel sprocket
(250) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Z 13- Z 48
(300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Z 14- Z 50
Transmission ratio
(250) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,692
(300) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,571
FINAL RATIOS
1st gear (250) ............................................................20,220
1st gear (300) ............................................................19,558
2nd gear (250) ............................................................16,513
2nd gear (300) ............................................................15,972
3rd gear (250) .............................................................13,564
3rd gear (300) .............................................................13,120
4th gear (250) .............................................................11,422
4th gear (300) .............................................................11,048
5th gear (250) ...............................................................9,932
5th gear (300) ...............................................................9,607
FRAME
Type............................... Steel single tube cradle (roud tubes);
light alloy rear frame.
FRONT SUSPENSION
Type..................."Upside-down" telescopic hydraulic front fork
with advanced axle (adjustable in compression and rebound
stroke); stanchions tubes Ø 1.89 in.
Legs axis stroke ..........................................................11.8 in.
REAR SUSPENSION
Type..............progressive with hydraulic single shock absorber
Wheel stroke ...............................................................12.6 in.
FRONT BRAKE
Type fixed disc Ø 10.23 in. "Wave" type with hydraulic control
and floating caliper
REAR BRAKE
Type.................................................... floating disc, ø 8.66 in.
with hydraulic control and floating caliper
EN - 7