Engine; Cooling; Starting; Timing System - Husqvarna TE 250 - 310 2011 I.E. Workshop Manual

GENERAL INFORMATION

ENGINE

Type .............................................................................. single cylinder, 4 stroke

COOLING

Type ................................................ liquid, with electric fan on TE-TXCi models
(TC-TE-TXCi 250)
Bore ..........................................................................................mm 79 (3,11 in.)
Stroke ................................................................................... mm 50,9 (2.00 in.)
Displacement .............................................................. cm 249,5 (15,22 cu. in.)
3
Compression ratio ....................................................................................13,6:1
(TE 310)
Bore ......................................................................................... mm 82 (3,23 in.)
Stroke ................................................................................... mm 57,3 (2,26 in.)
Displacement ............................................................ cm 302,44 (18,46 cu. in.)
3
Compression ratio ....................................................................................12,5:1

STARTING

(TC) .................................................. kick start (with automatic decompressor)
(TE-TXCi) ............................................................................................... electric

TIMING SYSTEM

Type ................................................. 4 titanium valves, in a radial arrangement,
operated through bowls by two overhead camshafts driven by a combined chain/
gears system
Valve clearance (with engine cold)
Intake ................................................................................. 0,15 mm (0,006 in.)
Exhaust............................................................................... 0,20 mm (0,008 in.)

LUBRICATION

Type ......................... wet crankcase, lobe pump and cartridge and mesh filters

IGNITION

Type ...........Electronic, inductive discharge, with adjustable advance (digital control)
Spark plug type..............................................................................NGK CR9EB
Spark plug gap ....................................................0,7÷0,8 mm (0.027÷0,031 in.)

FUEL SYSTEM

Type ..............................................................................Electronic injection feed

PRIMARY DRIVE

Drive pinion gear- Clutch ring gear ................................................... Z 17- Z 54
Transmission ratio .....................................................................................3,176

CLUTCH

Type .............................................oil bath multiple disc clutch, hydraulic control

TRANSMISSION

Type ............................................................................ constant mesh gear type

Transmission ratio (TE-TXCi)

1st gear. ..................................................................................... 2,142 (z 30/14)
2nd gear .................................................................................... 1,750 (z 28/16)
3rd gear .................................................................................... 1,450 (z 29/26)
4th gear...................................................................................... 1,227 (z 27/22)
5 th gear..................................................................................... 1,041 (z 25/24)
6 th gear .................................................................................... 0,884 (z 22/27)
Ed. 07-2010 A.3