Engine - Husqvarna TE 250-310 2012 I.E. Workshop Manual

GENERAL INFORMATION
TE 250 - 310 2012 I.E. / TE 250 - 310 2012 I.E. USA
TC 250 2012 - TC 250 2012 I.E. USA
TXC 250 - 310 2012 I.E. USA

Engine

Type .............................................................................. single cylinder, 4 stroke
Cooling
Type ................................................ liquid, with electric fan on TE-TXCi models
(TC-TE-TXC 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
(TE - TXC)
Type .................................................4 titanium valves, in a radial arrangement,
operated through bowls by two overhead camshafts driven by a combined chain/
gears system
(TC)
Type ........................................................................................4 titanium valves,
controlled by twin finger follower type camshafts, mixed chain/gear drive sys-
tem
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)
(TE - TXC)
Spark plug type..............................................................................NGK CR9EB
Spark plug gap ....................................................0.027÷0,031 in. (0,7÷0,8 mm)
(TC)
Spark plug type............................................................................... NGK CR9EI
Spark plug gap ....................................................0.031÷0,035 in. (0,8÷0,9 mm)
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
Workshop Manual Ed. 12-2011
A.3