Technical Data - Husqvarna NUDA 900 MY12 Operating & Maintenance Instructions

TECHNICAL DATA

ENGINE
Inline twin cylinder, 4 stroke, with four valves per cyl-
inder
Cooling . . . . . . . . . . . . . . . . . . . . liquid and electric fan
Bore . . . . . . . . . . . . . . . . . . . . . . . . . 3,31 in. (84 mm)
Stroke . . . . . . . . . . . . . . . . . . . . . . . . 3,19 in. (81 mm)
Displacement . . . . . . . . . . . . . . . . . 54,8 in
Compression ratio . . . . . . . . . . . . . . . . . . . . . . . . 13:1
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electric
Type of fuel . . . . . . . . . . . . . unleaded fuel 95ROZ/RON
TIMING SYSTEM
Type . . . . . . double overhead camshaft chain operated;
4 valves per cylinder
Valve clearance (with engine cold)
Intake . . . . . . . . .0,0091 ÷ 0,013 in. (0.23 ÷ 0.33 mm)
Exhaust . . . . . . 0,0118 ÷ 0,0161 in. (0.30 ÷ 0.41 mm)
LUBRICATION
Type . . . . . . . . . . dry sump oil circuit with built-in tank,
cartridge filter and oil/water heat exchanger
IGNITION
Type . . . . . . . . . . . . . . . . . . . .Electronic with adjustable
advance (digital control)
Spark plug type . . . . . . . . . . . . . . . . "NGK" LMAR8C-9
Spark plug electrode gap
. . . . . . . . . . 0,0315 ÷ 0,0354 in. (0.8 ÷ 0.9 mm)
FUEL SYSTEM
Type . . . . . . . . . . . . . . . . . . . . .Electronic injection feed
PRIMARY DRIVE
Drive gear on crankshaft . . . . . . . . . . . . . . . . . . . . Z 35
Driven gear on clutch housing . . . . . . . . . . . . . . . . Z 68
Transmission ratio . . . . . . . . . . . . . . . . . . . . . . . 1.943
CLUTCH
Type . . .oil bath multiple disc clutch, mechanical control
TRANSMISSION
(898 cm )
3 3
Type . . . . . . . . . . . . . . . . . . . . constant mesh gear type
Transmission ratio
1st gear . . . . . . . . . . . . . . . . . . . . . . . . 2.462 (32/13)
2nd gear . . . . . . . . . . . . . . . . . . . . . . . . 1.750 (28/16)
3rd gear . . . . . . . . . . . . . . . . . . . . . . . . 1.381 (29/21)
4th gear . . . . . . . . . . . . . . . . . . . . . . . . 1.174 (27/23)
5th gear . . . . . . . . . . . . . . . . . . . . . . . . 1.042 (25/24)
6th gear . . . . . . . . . . . . . . . . . . . . . . . . 0.960 (24/25)
SECONDARY DRIVE
Transmission sprocket (NUDA 900) . . . . . . . . . . . . Z 17
Transmission sprocket (NUDA 900 R) . . . . . . . . . . . Z 16
Rear wheel sprocket . . . . . . . . . . . . . . . . . . . . . . . Z 42
Transmission ratio (NUDA 900) . . . . . . . . . . . . . . . 2.47
Transmission ratio (NUDA 900 R) . . . . . . . . . . . . 2.625
Transmission chain dimensions . . .5/8" x 5/16" (525)
FINAL RATIOS
NUDA 900
1st gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11,815
2nd gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8,398
3rd gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,627
4th gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,634
5th gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,000
6th gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,607
NUDA 900 R
1st gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12,557
2nd gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8,925
3rd gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,043
4th gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,987
5th gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,314
6th gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,896
CHASSIS
Type . . . . tubular steel trellis with removable steel rear
chassis.
FRONT SUSPENSION
NUDA 900
Type upside-down hydraulic fork
. . . . . . . . . . . . . . . . . . ø 1,89 in. (ø 48 mm) legs
Wheel travel . . . . . . . . . . . . . . . . . . 8,27 in. (210 mm)
NUDA 900 R
Type upside-down hydraulic fork (adjustable compres-
sion, rebound and spring reload)
. . . . . . . . . . . . . . . . . . . ø 1,89 in. (ø 48 mm) legs
Wheel travel . . . . . . . . . . . . . . . . . . 8,27 in. (210 mm)
REAR SUSPENSION
NUDA 900
Type . . . . . . . . . . . . . . direct with hydraulic monoshock
(adjustable spring preload and hydraulic rebound damp-
ing)
Wheel travel . . . . . . . . . . . . . . . . . . 7,09 in. (180 mm)
NUDA 900 R
Type . . . . . direct with hydraulic monoshock (adjustable
spring preload and hydraulic compression and rebound
damping; adjustable length)
Wheel travel . . . . . . . . . . . . . . . . . . 7,09 in. (180 mm)
SPECIFICATIONS - OPERATION - MAINTENANCE EN - 7