Technical Data - Husqvarna FE 450 2018 Owner's Manual

23.1 Engine
Design
Displacement (FE 450 US)
Displacement (FE 501 US)
Stroke (FE 450 US)
Stroke (FE 501 US)
Bore
Compression ratio
Idle speed
Control
Valve diameter, intake
Valve diameter, exhaust
Valve clearance
Intake at: 20 °C (68 °F)
Exhaust at: 20 °C (68 °F)
Crankshaft bearing
Conrod bearing
Piston pin bearing
Pistons
Piston rings
Engine lubrication
Primary transmission
Clutch
Gearbox
Transmission ratio
First gear
Second gear
Third gear
Fourth gear
Fifth gear
Sixth gear
Alternator
Ignition
Spark plug
Spark plug electrode gap
Cooling
Starting aid

23 TECHNICAL DATA

1-cylinder 4-stroke engine, water-cooled
449.9 cm³ (27.455 cu in)
510.9 cm³ (31.177 cu in)
63.4 mm (2.496 in)
72 mm (2.83 in)
95 mm (3.74 in)
11.8:1
1,800 ... 1,900 rpm
OHC, 4 valves controlled via rocker arm
40 mm (1.57 in)
33 mm (1.3 in)
0.10 ... 0.15 mm (0.0039 ... 0.0059 in)
0.12 ... 0.17 mm (0.0047 ... 0.0067 in)
2 grooved ball bearings
Slide bearing
Not a bearing bush - DLC-plated piston pins
Forged light alloy
1 compression ring, 1 oil scraper ring
Pressure circulation lubrication with two Eaton
pumps
31:76
Multidisc clutch in oil bath, hydraulically activated
6-gear, claw shifted
14:36
17:32
19:28
22:26
23:24
26:21
12 V, 168 W
Contactless controlled fully electronic ignition with
digital ignition adjustment
NGK LKAR9AI-10
1.0 mm (0.039 in)
Water cooling, permanent circulation of coolant by
water pump
Electric starter
143