Part. N. 8000 A8796 (03-2007) A - Husqvarna TC 250-450-510/2007 Workshop Manual

GENERALITÀ
GENERAL
NOTES GENERALES
ALLGEMEINES
GENERALIDADES
ENGINE
4-stroke, single cylinder
Bore (250).......................................................................... 2.99 in.
Bore (450- 510)................................................................. 3.81 in.
Stroke (250) ...................................................................... 2.17 in.
Stroke (450)...................................................................... 2.39 in.
Stroke (510)....................................................................... 2.67 in.
Displacement (250)........................................................15.22 cu. in.
Displacement (450)........................................................ 27.39 cu. in.
Displacement (510)........................................................ 30.56 cu. in.
Compression ratio .......................................................... 12,9:1
TIMING SYSTEM
Double overhead camshaft; 4 valves
Valve angle in relation to cylinder:
INLET ................................................................................. 12°
EXHAUST .......................................................................... 13°
Valve clearance with cold engine
INLET................................................................................ 0.004-0.006 in.
EXHAUST......................................................................... 0.006-0.008 in.
FUEL FEEDING
Gravity
Dry type air filter
Carburetor type (250) ................................................ "Keihin" FCR-MX 37 with acceleration pump and T.P.S. (Throttle Position Sensor)
Carburetor type (450-510)......................................... "Keihin" FCR-MX 41 with acceleration pump and T.P.S. (Throttle Position Sensor)
LUBRICATION
Type............................................................................. Dry sump with two oil pump rotors and cartridge filter
COOLING
By fluid with double cooler (TC)
By fluid with double cooler and electric fan (TE-SMR)
IGNITION
Electronic with capacitive discharge; Digital controlled variable spark advance
Spark plug type ................................................................ "NGK" CR8EB
Spark plug gap ................................................................ 0.027 in.
STARTING (TC)... .......................................................kick start (with automatic decompressor) *
STARTING (TE)..........................................................electric and kick start (with automatic decompressor)
STARTING (SMR)... .................................................... electric (with automatic decompressor) **
*: electric start upon request
**: kick start upon request
Part. N. 8000 A8796 (03-2007) A.5