Timing System; Fuel System; Lubrication; Cooling - Husqvarna TC 449 2011 I.E. Workshop Manual

Engine
Single cylinder, 4 stroke
TC-TE-TXC-SMR 449
Bore .......................................................................................... 3.86 in (98 mm)
Stroke .................................................................................... 2.35 in (59.6 mm)
Displacement ............................................................. 27.44 cu.in (449.6 cu.cm)
Compression ratio (TC) ..............................................................................13:1
Compression ratio (TE-TXC-SMR) .............................................................12:1
TE-TXC-SMR 511
Bore ........................................................................................ 3.98 in (101 mm)
Stroke .................................................................................... 2.35 in (59.6 mm)
Displacement ............................................................. 29.14 cu.in (477.5 cu.cm)
Compression ratio ......................................................................................12:1

Timing system

Type .................................. double overhead camshaft; chain operated; 4 valve
Valve clearance (with engine cold)
TE-TXC-SMR
INTAKE ......................................................... 0.002 ÷ 0.004 in (0.05 ÷ 0.10 mm)
EXHAUST ....................................................... 0.01 ÷ 0.012 in (0.25 ÷ 0.30 mm)
TC
INTAKE ........................................................... 0.008 ÷ 0.01 in (0.20 ÷ 0.25 mm)
EXHAUST ..................................................... 0.012 ÷ 0.014 in (0.30 ÷ 0.35 mm)

Fuel system

Type .............................................................................. Electronic injection feed
Air filtering through lubricated filter

Lubrication

Type ..................................... wet sump with two lobe pumps and cartridge filter

Cooling

Liquid with double radiator and electric fan

Ignition system

Electronic, capacitive discharge with adjustable advance (digital control)
Spark plug type........................................................................."NGK" CR 9EKB
Spark plug electrode gap.......................................................... 0.03 in (0.7 mm)
Starting. ..................................................................................................electric

Transmission

Clutch: oil bath multiple disc clutch, hydraulic control
Transmission: with constant mesh gears
Motion is transmitted from engine to gearbox primary shaft through spur gears
Primary drive
Drive pinion gear ......................................................................................... Z 32
Clutch ring gear ........................................................................................... Z 22
Transmission ratio .................................................................................... 2.618
Gear ratios (TC)
1st gear..........................................................................................2.286 (32/14)
2nd gear ........................................................................................1.875 (30/16)
3rd gear .........................................................................................1.533 (23/15)
4th gear .........................................................................................1.260 (29/23)
5th gear .........................................................................................1.043 (24/23)
GENERAL INFORMATION
TC 449 2011/2012 I.E.
TE 449 - 511 2011/2012 I.E.
TXC 449 - 511 2011/2012 I.E.
SMR 449 2011 I.E.
SMR 511 2011/2012 I.E.
A.3
Workshop Manual Ed. 03-2012