HUSABERG FE 550 Repair Manual

TECHNICAL SPECIFICATIONS - ENGINE
I
1
Engine FC 450/4 FE 450e/6 FS 450e/6 FE 501e/6
Design Liquid-cooled, 1-cylinder 4-stroke Otto engine with balancer weight
Displacement 449 cm
3
501 cm
3
Bore/Stroke 100 / 57,2 mm 95 / 70,7 mm
Compression ratio 13:1 11,6:1
Keihin carburetor FCR-MX 41 FCR-MX 39
Fuel unleaded fuel with at least RON 95 (USA = Premium RON 91)
Timing 4 valves controlled over rocker arm and 1 camshaft, camshaft drive with single chain
Valve diameter, intake 35 mm
Valve diameter, exhaust 30 mm
Valve clearance, intake, cold 0,12 mm
Valve clearance, exhaust, cold 0,12 mm
Crankcase bearing 2 roller bearings
Conrod bearing needle bearing
Piston pin bearing bronze bush
Piston Light allow – forged
Piston rings 1 compression ring, 1 oil scraper ring
Engine lubrication pressure lubrication with trochoid rotor pump
Engine oil fully synthetic engine oil (Motorex Power Synt 4T SAE 10W50)
Quantity of engine oil 1.0 liter
Primary drive straight-toothed spur wheels 29:78 Z
Clutch multi-disk clutch in oil bath
Transmission (claw shifted) 4-speed 6-speed
Gear ratio
1st gear 14:33 14:33
2nd gear 17:30 17:30
3rd gear 19:26 19:26
4th gear 23:25 23:25
5th gear – 24:22
6th gear – 27:20
Ignition system breakerless transitorized DC-CDI ignition system with digital ignition advance, type KOKUSAN
Generator – 12V 150W
Spark plug NGK DCPR 8 E
Electrode distance 0,6 mm
Cooling system liquid cooled, permanent circulation of cooling liquid through water pump
Cooling liquid 1.0 liters, mixing ratio 40% antifreeze, 60% water,at least –25° C
Starting aid kickstarter kickstarter/electric starter
BASIC CARBURETOR SETTING
Type of carburetor Keihin FCR-MX 41 Keihin FCR-MX 39 Keihin FCR-MX 39
Carburetor ID number 4125B 3925B 3925BA
Main jet 182 178 178
Jet needle OBDVR OBDVT (OBDVR) OBDVT (OBDVR)
Idling jet 40 38 (40) 38 (42)
Main air jet 200 200 200
Idle air jet 100 100 100
Needle position 6th from top 2nd (6th) from top 3rd from top
Starting jet 85 85 85
Mixture control screw open 1,5 1,5 (2,0) 1,5
Slide 15 15 15
Restriction – slide stop slide stop
Pump diaphragm stop 858 / 2,15 mm 858 / 2,15 mm 858 / 2,15 mm
Hot start knob diameter 2,5 mm diameter 2,5 mm diameter 2,5 mm
FC 450/4
FE/FS 450e/6
EU/AUS/USA green
FE 501e/6
EU/AUS

HUSABERG FE 550 Specifications

General

Displacement	549.1cc
Fuel system	Keihin FCR-MX 41
Cooling system	Liquid-cooled
Starter	Electric starter
Transmission	6 speed
Engine type	Single cylinder, 4-stroke